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From the lab - family tree of White Labs yeast

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We now have the big one! NCYC have released 230 genomes as Project PRJEB42916 here :
https://ncbi.nlm.nih.gov/bioproject/PRJEB42916/
https://ebi.ac.uk/ena/browser/view/PRJEB42916

There's also now a genome field on their strain pages. I've extracted the equivalent NCYC numbers :
70,72,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,95,96,97,232,235,236,241,356,357,358,360,361,363,367,368,401,430,478,479,482,491,505,609,619,620,621,622,667,672,684,695,816,826,956,963,996,1001,1004,1006,1007,1010,1017,1023,1026,1030,1033,1037,1044,1052,1055,1064,1072,1097,1102,1111,1118,1132,1147,1151,1159,1163,1167,1179,1183,1190,1199,1211,1218,1228,1240,1243,1245,1260,1264,1270,1274,1280,1283,1286,1289,1292,1298,1308,1311,1315,1321,1337,1406,1407,1408,1409,1410,1413,1414,1415,1444,1529,1603,1681,1765,2397,2401,2402,2517,2587,2592,2695,2733,2737,2776,2777,2778,2779,2780,2798,2855,2945,2947,2967,2974,3025,3026,3028,3030,3031,3032,3033,3035,3036,3037,3038,3039,3051,3052,3076,3077,3114,3121,3122,3123,3124,3125,3126,3127,3265,3311,3313,3314,3315,3318,3319,3324,3325,3326,3331,3333,3334,3338,3339,3340,3341,3342,3343,3403,3406,3445,3447,3448,3449,3455,3456,3457,3458,3460,3461,3462,3464,3465,3467,3470,3472,3486,3487,3493,3497,3498,3499,3510,3511,3513,3514,3515,3516,3521,3522,3523,3528,3529,3546,3549,3552,3557,3612,3630,3997,4063,4068,4081

So if @suregork has nothing better to do.... :p

Whilst we're on the subject, did anyone take a look at the genomes released by Brewlab and friends, of yeast from McEwan's stout recovered from a 1895 shipwreck and from two bottles of King's Ale, brewed by Bass to celebrate the visit to the brewery of King Edward VII?

They found Debaryomyces hansenii and Brettanomyces/Dekkera bruxellensis in all three of the shipwreck bottles, one had a couple of fungi including Metschnikowia pulcherrima, and one had viable Sacc, they also found Deb, Brett, (lots of ) Talaromyces rotundus in the Bass bottles, and Sacc in one of them. Given the historical importance of Bass and McEwan's, it would be fascinating to see how they fit in to the tree.

https://onlinelibrary.wiley.com/doi/full/10.1002/jib.641https://www.ncbi.nlm.nih.gov/bioproject/PRJNA671797
@suregork - is there a quick and dirty marker for distinguishing Beer2 from Beer1?
 
We now have the big one! NCYC have released 230 genomes as Project PRJEB42916 here :
https://ncbi.nlm.nih.gov/bioproject/PRJEB42916/
https://ebi.ac.uk/ena/browser/view/PRJEB42916

There's also now a genome field on their strain pages. I've extracted the equivalent NCYC numbers :
70,72,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,95,96,97,232,235,236,241,356,357,358,360,361,363,367,368,401,430,478,479,482,491,505,609,619,620,621,622,667,672,684,695,816,826,956,963,996,1001,1004,1006,1007,1010,1017,1023,1026,1030,1033,1037,1044,1052,1055,1064,1072,1097,1102,1111,1118,1132,1147,1151,1159,1163,1167,1179,1183,1190,1199,1211,1218,1228,1240,1243,1245,1260,1264,1270,1274,1280,1283,1286,1289,1292,1298,1308,1311,1315,1321,1337,1406,1407,1408,1409,1410,1413,1414,1415,1444,1529,1603,1681,1765,2397,2401,2402,2517,2587,2592,2695,2733,2737,2776,2777,2778,2779,2780,2798,2855,2945,2947,2967,2974,3025,3026,3028,3030,3031,3032,3033,3035,3036,3037,3038,3039,3051,3052,3076,3077,3114,3121,3122,3123,3124,3125,3126,3127,3265,3311,3313,3314,3315,3318,3319,3324,3325,3326,3331,3333,3334,3338,3339,3340,3341,3342,3343,3403,3406,3445,3447,3448,3449,3455,3456,3457,3458,3460,3461,3462,3464,3465,3467,3470,3472,3486,3487,3493,3497,3498,3499,3510,3511,3513,3514,3515,3516,3521,3522,3523,3528,3529,3546,3549,3552,3557,3612,3630,3997,4063,4068,4081

So if @suregork has nothing better to do.... :p

Whilst we're on the subject, did anyone take a look at the genomes released by Brewlab and friends, of yeast from McEwan's stout recovered from a 1895 shipwreck and from two bottles of King's Ale, brewed by Bass to celebrate the visit to the brewery of King Edward VII?

They found Debaryomyces hansenii and Brettanomyces/Dekkera bruxellensis in all three of the shipwreck bottles, one had a couple of fungi including Metschnikowia pulcherrima, and one had viable Sacc, they also found Deb, Brett, (lots of ) Talaromyces rotundus in the Bass bottles, and Sacc in one of them. Given the historical importance of Bass and McEwan's, it would be fascinating to see how they fit in to the tree.

https://onlinelibrary.wiley.com/doi/full/10.1002/jib.641https://www.ncbi.nlm.nih.gov/bioproject/PRJNA671797
@suregork - is there a quick and dirty marker for distinguishing Beer2 from Beer1?

Yeah I saw this earlier today, very cool! Will see what I can do, don't have that much extra time at the moment and that is quite a lot of data :)
 
If it helps, I've matched a lot of the numbers to NCYC descriptions, first by doing a lookup on Seymour's list on Jim's and then by manually looking up the NCYC website. I got as far as NCYC3000 before getting bored which roughly corresponds to the millennium, by which time they were mostly collecting medical samples. I may get enthusiasm to finish it off, can't promise though!

A lot of their sequencing has been of the "a guy at Carlsberg or a hospital sent us this random sample a century ago, let's figure out what the hell it is" kind, also I wonder if they've been looking at the evolution of bread yeast given that it's something they regularly collect and have samples going back 100 years. But they bring it right up to date with some Voss and Hornindal strains.

NCYC 4081 is interesting - "Yorkshire Square Stone Type Ale yeast via USA. Reported as being very flocculent and producing a large head during fermentation. Only requires rousing once every six hours for half an hour, otherwise head production can be excessive." deposited December 2015.

NCYC70Unknown 1933
NCYC72Schmitt, Carlsberg Laboratorium.
NCYC74Saccharomyces cerevisiae Hillman Hospital, Birmingham, Alabama, USA.
NCYC75Unknown 1920
NCYC76Unknown 1933
NCYC77Baker's Yeast strain. Dr. A. Harden, Lister Institute, London
NCYC78Unknown 1925
NCYC79Fleischmann baker's yeast. 1942
NCYC80Unknown 1930
NCYC81Unknown 1942
NCYC82Unknown A.Klöcker, Carlsberg Labs. Copenhagen.
NCYC83Unknown Dr. A. Harden, Lister Institute. 1920
NCYC84Barclay Perkins Brewery strain, Southwark, London, England, 1943.
NCYC85Unknown Prf. A.J. Kluyver, Delft, Netherlands. Nov 1939 (!!!)
NCYC86Unknown 'Old Process strain'. ATCC 7753
NCYC87Distillery yeast. 1947 ATCC 9763
NCYC88Ale strain. NCTC 6479, Thorne's Yeast S
NCYC89Fleischmann's yeast cake
NCYC90Unknown 1928
NCYC91Ivory Coast Palm Wine, from Elaeis guineensis.
NCYC92Unknown 1933
NCYC93Unknown 1925
NCYC95Unknown 1933
NCYC96Unknown 1922
NCYC97Unknown Dr. H.B. Hutchinson, Distillers Co. Ltd, Great Burgh, Epsom, UK. 1945
NCYC232Strain S, an American brewery ale strain, 1951.
NCYC235Whibread ZSC 169, anonymized British brewery ale strain, good head, 1953.
NCYC236Whitbread ZSC 155, single-cell isolate of highly attenuative IPA strain, good head, 1951.
NCYC241Whitbread SC16, Charrington Anchor Brewery, ale strain, good head, 1951.
NCYC356Mead production strain
NCYC357isolated from lees of Avize-Cramant Mead, north-eastern France, 1951.
NCYC358isolated from lees of plum mead, 1951.
NCYC360Distilling strain. D.R. Jackson, African Distillers (Rhodesia) Ltd.
NCYC361Beer spoilage strain, from wort in Irish brewery. R.B. Gilliland 1952
NCYC363anonymized historic stout production strain from an English Brewery, 1952
NCYC367anonymized Yorkshire Square Stone system ale strain, good top-cropping characteristics, 1952.
NCYC368anonymized Yorkshire Square Stone system ale strain, good top-cropping characteristics, 1952.
NCYC401Burton type ale yeast, isolated from pressed brewer's yeast, 1953.
NCYC430Saccharomyces cerevisiae, Reisling wine strain, 1955.
NCYC478Saccharomyces cerevisiae, Sake production "Kyokai 6 strain" deposited by Dr. Sakaguchi, 1956.
NCYC479Saccharomyces cerevisiae, sake production "Kyokai 7 strain" deposited by Dr. Sakaguchi, #9 in NCYC "Top Ten Yeasts" for commercial brewing, 1956.
NCYC482Saccharomyces cerevisiae, Champagne yeast, 1956.
NCYC491Single cell isolate from baking yeast.
NCYC505Oranjeboom Brewery ale strain, Netherlands, good head, 1957.
NCYC609Saccharomyces cerevisiae, isolated from West Indian molasses, deposited by Tate & Lyle, 1960.
NCYC619Saccharomyces cerevisiae, Jerez Sherry production yeasts from Feduchy, 1962.
NCYC620Saccharomyces cerevisiae, Jerez Sherry production yeasts from Feduchy, 1962.
NCYC621Saccharomyces cerevisiae, Jerez Sherry production yeasts from Feduchy, 1962.
NCYC622(Gilliland strain 1285) Guinness ale strain, under-attenuating strain unable to ferment malto-triose, 1960.
NCYC667Unknown 1963
NCYC672Saccharomyces cerevisiae, Sherry yeasts, 1964
NCYC684Saccharomyces cerevisiae, Steinberg German wine yeast, 1965.
NCYC695Unknown 1966
NCYC816Saccharomyces cerevisiae, Australian Epernay wine yeast, 1974.
NCYC826Unknown 1976
NCYC956Genetically defined strain. Genotype: SUC2 mal gal2 CUP1. R.K. Mortimer, YGSC,
NCYC963Saccharomyces cerevisiae, anonymized British Brewery Ale Strain 7, 1973.
NCYC996Saccharomyces cerevisiae, US Patented baking yeasts, 1981.
NCYC1001anonymized British Brewery ale strain, from historic Whitbread collection, good head, flocculent, 1958.
NCYC1004anonymized British Brewery ale strain, intermediate head, non-flocculent, 1958.
NCYC1006anonymized British Brewery ale strain, good head, non-flocculent, 1958.
NCYC1007anonymized British Brewery ale strain, good head, non-flocculent, 1958.
NCYC1010anonymized British Brewery ale strain, good head, non-flocculent, 1958.
NCYC1017anonymized British Brewery ale strain, no head, non-flocculent, 1958.
NCYC1023anonymized British Brewery ale strain, good head, non-flocculent, 1958.
NCYC1026anonymized British Brewery ale strain, no head, flocculent, the renowned Whitbread B equivalent strain, #8 in NCYC "Top Ten Yeasts" for commercial brewing, 1958. Is Wyeast 1026 "British Cask Ale" related?
NCYC1030anonymized British Brewery ale strain, no head, non-flocculent, 1958.
NCYC1033anonymized British Brewery ale strain, good head, non-flocculent, 1958.
NCYC1037anonymized British Brewery ale strain, good head, non-flocculent, 1958.
NCYC1044anonymized British Brewery ale strain, no head, flocculent, 1958.
NCYC1052anonymized British Brewery ale strain, intermediate head, flocculent, 1958.
NCYC1055anonymized British Brewery ale strain, no head, flocculent, 1958.
NCYC1064anonymized British Brewery stout strain, good head, non-flocculent, 1958.
NCYC1072anonymized British Brewery ale strain, intermediate head, flocculent, 1958.
NCYC1097anonymized British Brewery ale strain, no head, non-flocculent, 1958.
NCYC1102anonymized British Brewery ale strain, good head, flocculent, 1958.
NCYC1111anonymized British Brewery ale strain, no head, flocculent, 1958.
NCYC1118anonymized British Brewery ale strain, good head, non-flocculent, 1958.
NCYC1132anonymized British Brewery ale strain, good head, flocculent, 1958.
NCYC1147anonymized British Brewery ale strain, no head, non-flocculent, 1958.
NCYC1151anonymized British Brewery ale strain, good head, non-flocculent, 1958.
NCYC1159anonymized British Brewery ale strain, good head, flocculent, 1959.
NCYC1163anonymized British Brewery ale strain, intermediate head, non-flocculent, 1959.
NCYC1167anonymized British Brewery ale strain, no head, non-flocculent, 1959.
NCYC1179anonymized British Brewery ale strain, intermediate head, non-flocculent, 1960.
NCYC1183anonymized British Brewery ale strain, no head, flocculent, 1959.
NCYC1190anonymized British Brewery ale strain, no head, flocculent, 1960.
NCYC1199anonymized British Brewery ale strain, good head, flocculent, 1961.
NCYC1211anonymized British Brewery ale strain, intermediate head, flocculent, 1962.
NCYC1218anonymized British Brewery ale strain, good head, flocculent, 1963.
NCYC1228anonymized British Brewery ale strain, good head, non-flocculent, 1964.
NCYC1240anonymized British Brewery ale strain, no head, non-flocculent, 1966.
NCYC1243anonymized British Brewery ale strain, intermediate head, non-flocculent, 1966.
NCYC1245anonymized British Brewery ale strain, no head, fairly flocculent, high attenuating, modern non-top-cropping behavior well-suited to conical fermentors, good flavour, a popular historic English ale production strain, #3 in NCYC "Top Ten Yeasts" for commercial brewing, 1965.
NCYC1260anonymized brewery ale strain, no head, flocculent, for use in tower continuous fermentors, 1968.
NCYC1264anonymized British brewery ale strain, no head, flocculent, 1968.
NCYC1270anonymized brewery ale strain, no head, flocculent, 1969.
NCYC1274anonymized British brewery ale strain, good head, non-flocculent, 1969.
NCYC1280anonymized British brewery ale strain, flocculent, 1969.
NCYC1283anonymized British brewery ale strain, good head, non-flocculent, 1970.
NCYC1286anonymized British brewery ale strain, good head, flocculent, 1970.
NCYC1289anonymized British brewery ale strain, good head, flocculent, 1970.
NCYC1292anonymized British brewery ale strain, no head, flocculent, 1970.
NCYC1298anonymized British brewery ale strain, good head, flocculent, 1970.
NCYC1308anonymized British brewery ale strain, no head, non-flocculent, 1971.
NCYC1311anonymized British brewery ale strain, no head, flocculent, 1971.
NCYC1315anonymized British brewery ale strain, no head, flocculent, 1972.
NCYC1321anonymized British brewery ale strain, intermediate head, flocculent, 1973.
NCYC1337anonymized British brewery stout strain, good head, non-flocculent, 1974.
NCYC1406Wine production strain. Isolated from Grape must. Japan
NCYC1407Sake strain isolated from moromi mash, Japan, 1982.
NCYC1408Mesophilic wine production strain. Isolated from grape must. Japan
NCYC1409Wine production strain. Japan
NCYC1410Wine production strain. Japan
NCYC1413Sauternes wine production strain.
NCYC1414Tarragona wine production strain.
NCYC1415Tokay 22 wine production strain.
NCYC1444Ale production strain. UK 1982
NCYC1529Active dried baker's yeast. 1984
NCYC1603anonymized British brewery ale strain, 1986.
NCYC1681bottom-cropping ale strain, used in pilot scale fermentors, 1987.
NCYC1765Bakers yeast 1987
NCYC2397British ale strain called Darley's ale yeast, fast fermentation, good head, Gilliland Type IV loose flaky/clumpy sediment, 1991.
NCYC2401Saccharomyces cerevisiae, Sri Lankan palm wine strains, 1992.
NCYC2402Saccharomyces cerevisiae, Sri Lankan palm wine strains, 1992.
NCYC2517Burgundy strain UCDavis
NCYC2587Saccharomyces cerevisiae, sake strain, 1994.
NCYC2592Distiller's production strain. CBS 1200
NCYC2695Saccharomyces cerevisiae, cider production strain "Rankine's 350" used commercially in Australia, deposited by University of California, Davis, USA, 1996.
NCYC2733anonymized British brewery ale strain, 1985.
NCYC2737anonymized British brewery ale strain, 1997.
NCYC2776Saccharomyces cerevisiae, Vaginal isolate from patient recently treated with Clotrimazole, Antwerp, Belgium, 1997.
NCYC2777Saccharomyces cerevisiae, Vaginal isolate from patient recently treated with Clotrimazole, Antwerp, Belgium, 1997.
NCYC2778Oral isolate from patient, Antwerp, Belgium.
NCYC2779Oral swab from patient, Antwerp, Belgium.
NCYC2780Vaginal swab from symptomless patient, Antwerp, Belgium.
NCYC2798From mouth of AIDS patient, Germany.
NCYC2855Wine production strain. CECT 1478 Tokaj22
NCYC2945Distiller's yeast CBS 1508
NCYC2947Wine production Bulgaria
NCYC2967Saccharomyces cerevisiae, isolated from a stool sample in Notingham City Hospital, UK, 2000.
NCYC2974Human throat UK 2000
NCYC3314Saccharomyces cerevisiae, isolated from barrel fermentation in Napa Valley, USA, 2005.
NCYC3315
NCYC3318Saccharomyces cerevisiae, isolated from wine fermentation in Maule Region, Chile, 2005.
NCYC3319Saccharomyces cerevisiae, isolated from wine fermentation in Maule Region, Chile, 2005.
NCYC3406anonymized British brewery ale strain, 2006.
NCYC3445
NCYC3447Saccharomyces cerevisiae, isolated from grapes in Australia, 2007.
NCYC3448Saccharomyces cerevisiae, isolated from Fruit of Opuntia stricta, Bahamas, 2007.
NCYC3460Saccharomyces cerevisiae, isolated from Ragi (sake type wine), Japan, 2007.
NCYC3461Saccharomyces cerevisiae, isolated from nectar of Bertam Palm, Malaysia, 2007.
NCYC3462Saccharomyces cerevisiae, isolated from nectar of Bertam Palm, Malaysia, 2007.
NCYC3529Human clinical isolate, from sputum. UK
NCYC3546Saccharomyces cerevisiae, multi-strains from "Norwegian Kveik yeast blend. Traditional mixed brewing yeast sourced from kveikstokk (yeast log) Vos", 2009. #2 Rivene
NCYC3549Saccharomyces cerevisiae, multi-strains from "Norwegian Kveik yeast blend. Traditional mixed brewing yeast sourced from kveikstokk (yeast log) Vos", 2009. #2 Rivene
NCYC3552Saccharomyces cerevisiae, multi-strains from "Norwegian Kveik yeast blend. Traditional mixed brewing yeast sourced from kveikstokk (yeast log) Vos", 2009. #2 Rivene
NCYC3557Mat a/alpha derivative of DBVPG6040
NCYC3612Mat alpha derivative of YIIc17_E5
NCYC3630Mat alpha derivative of Y12
NCYC3997Single strain isolate from NCYC 3995, Traditional Norwegian Kveik Brewing yeast culture, Voss, Norway. #1 Sigmund
NCYC4063Traditional Norwegian Kveik Brewing yeast, Hornindal, Norway. #5 Hornindal
NCYC4068Traditional Norwegian Kveik Brewing yeast, Hornindal, Norway. #5 Hornindal
NCYC4081Yorkshire Square Stone Type Ale production yeast.
 
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Where's the link to your GoFundMe :mug:.

Yeast people use OnlyFAN...

Don't get your hopes up too high - the NCYC started with brewing yeast, in particular a load of yeast from Whitbread, but in recent years has been more involved with gathering clinical samples from British hospitals, so there's a lot of those in this list.
 
There's a new preprint out from the Dunham lab in Seattle that is mostly looking at what happens to yeast genomes as they are repitched, but they also sequenced all the Chicos they could find to get an idea of the background diversity....

There's also a ton of detail on how yeast genomes change over time, but that's another story....

If anybody's interested, Escarpment are holding a webinar with Dunham about the Chico stuff, and in particular its evolution on repitching, tomorrow-evening-ish. Unfortunately it's 1am my time so I will probably pass, but if anybody's interested it's at :
https://www.crowdcast.io/e/mutant-beer-yeast-evolution/register
 
1684581722420.png
I've just come across an interesting paper - random lab guy at brewery doing next-gen sequencing as you do (turns out Matt Cottrell has 89 papers to his name from his former life as a marine microbiologist, this is not his first rodeo) - that is the first published confirmation I've seen that BRY-97 is a Chico. In fact he used interdelta 12/21 to distinguish the 1056 subgroup (including Imperial A07 and Omega OYL-004) from the US-05 subgroup, and BRY-97 grouped with 1056/A07/OYL-004. Which rather supports the idea that "Imperial M44" in the chart above is MJ M44 West Coast, and that the latter is repacked BRY-97. Which kinda fits with previous suspicions based on lag times.

The paper is mostly looking at how repeatable interdeltas are for yeast ID - they work great for WLP001 out to 18 repitchings, but he had some problems with Belle Saison, albeit mostly that seemed to be sequencing problems rather than yeast related.

https://www.tandfonline.com/doi/full/10.1080/03610470.2022.2110645
1684582839040.png


These do correlate with @isomerization 's 12/21 interdeltas - US-05 is V in slide 3, you can see those clear 4 bands from 200-600bp even if it's not resolving the ones up at ~1300bp. 1.5% gel helps I guess.

In other, completely unrelated news, the first full hop genome - Cascade - was published 2 years ago, they're still polishing it up but it's at :
https://acsess.onlinelibrary.wiley.com/doi/10.1002/tpg2.20072https://www.ncbi.nlm.nih.gov/bioproject/PRJNA562558/Project home is at HopBase but it's a bit fragile, lots of it doesn't work for much of the time...
 
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There's now an update with a bunch of Wyeast and dry strains, albeit not all of them :
http://beer.suregork.com/?p=4030

Some key points -
S-04 is nothing to do with Whitbread, it's closest to 006 Bedford and 013 London
BRY-97 is absolutely nothing to do with the Chicos but is a distant cousin of S-33/Windsor

I've just come across an interesting paper - ….. that is the first published confirmation I've seen that BRY-97 is a Chico. In fact he used interdelta 12/21 to distinguish the 1056 subgroup (including Imperial A07 and Omega OYL-004) from the US-05 subgroup, and BRY-97 grouped with 1056/A07/OYL-004. Which rather supports the idea that "Imperial M44" in the chart above is MJ M44 West Coast, and that the latter is repacked BRY-97. Which kinda fits with previous suspicions based on lag times.

So, the two papers contradict each other re. BRY-97 is or is NOT a chico? Sorry, don‘t understand much of the nitty gritty of this…
 
BRY-97 is a Chico, the early sequencing had some kind of problem with the wrong labels or whatever.

Ok, thx. And have I read the results correctly that BRY-97 is in fact a much more closely related Chico-Relative than US-05? I in my naivity up until now had believed that US-05 was Chico. My understanding now is that there are several closely related Chico-Siblings, one of which is BRY-97. Is there an „original“ Chico, the Chico?

Cheers!
 
What difference does it make? A brewer should choose a yeast that produces beer he or she is happy with regardless of its hypothesised genetic ancestry. Even genetically identical (by descent) yeast can behave differently based on how they interact with the environment. So, in theory, two genetically identical yeast cells separated at budding, sent to different breweries and remaining genetically identical (without mutation) could still diverge behaviourally over time, because of heritable non-genetic factors. Epigenetics. If there’s one thing biologists have learnt over the last 20 years or so, it’s how genetics is just one layer of biological organisation, not so much the ‘blueprint’ it was once thought, but more a set of loose guidelines how to build living things, which are clearly more than just genetics.

It’s best to view most of these publications as low-value ‘technical reports’ lacking sufficient scientific integrity to warrant publication in science journals. The published phylogenies are mainly untestable hypotheses beyond low resolution phylogeography. Drilling down into higher resolution analyses, e.g., variants of strains (therefore at least some strains or perhaps all, depending on samples and molecular markers), gets too noisy. Establishing, for example, genetic identity by decent and direction of gene flow, are impossible in most cases and merely fudged by assumptions like ‘the simplest path is correct’. In most cases, without solid independent evidence to support ‘genetic’ conclusions, it borders on pseudoscience and even fantasy feeding biased narratives in the wrong hands. Academic stamp collecting. All that matters really is brewers are happy with the yeast they choose to pitch.
 
Ok, thx. And have I read the results correctly that BRY-97 is in fact a much more closely related Chico-Relative than US-05? I in my naivity up until now had believed that US-05 was Chico. My understanding now is that there are several closely related Chico-Siblings, one of which is BRY-97. Is there an „original“ Chico, the Chico?
Stop thinking there's One True Chico. Look at the pictures below which are all of the same person, but which show him with different body sizes, all the cells will have been replaced, some will be genetically mutated compared to the original fertilised egg (notably in his prostate recently), his hair is different - which is the Charles?

So it is with yeast - they evolve and change just through the process of being repitched in a brewery. You can't say that the original ($$$) BRY-96 is "the" Chico - as it had never been anywhere near California when it went into a freezer at Siebel. In as much as there was ever a One True Chico, it existed for a fleeting moment after a few generations of arriving at Sierra Nevada and adapting to the conditions there. But now Sierra Nevada makes their beer with a yeast that has changed since that time.

Yeast are in a state of constant change, sometimes those changes matter to a brewer, often they don't. But changes are inevitable. Brewers try to simplify things for themselves by using names like Chico which don't capture the changes, and marketeers are even worse.

But your One True Chico does not exist. If you want to make a beer like Sierra Nevada's 2024 beers, then harvest yeast from their beer, they condition with the production strain. Assuming BRY-97 is the "Imperial M44" in the family tree above, then it's more closely related to US-05 than either of them are to WLP001 or BRY-96. Whilst I disagree with McMullan on the importance of taxonomy, I would agree with him on this - don't worry so much about the detailed taxonomy, and use the strain that works best for you.

1709292539464.png
1709292623285.png
1709292669940.png
1709292741615.png
1709292973349.png
 
Stop thinking there's One True Chico….

But your One True Chico does not exist. …. and use the strain that works best for you.
Cheers NB.

I‘m definitely fine with using what turns out to work best and am not on a quest of the Holy Grail of The One True Chico, rather I‘m at the stage where I‘m just starting to compare same recipe with different yeast strains, and am trying to figure out which one are worth comparing.

My actual yeast quest at the moment is with the London Ale III family, how similar (or different?) Verdant, 1318, London Fog and Imperial Juice actually are, whether it‘s worth trying out the expensive liquid yeasts or if Verdant is „good/simllar enough“ and what the heck is actually in M66. Wouldn‘t happen to have any imput on that, would you?

cheers!

Josh🍻
 
Whilst I disagree with McMullan on the importance of taxonomy
I’m not questioning the importance of good taxonomy. Quite the opposite. These ‘domesticated’ yeast phylogenies are a fuzzy branch of taxonomy fogged by being artificial populations with insufficient reliable info re sources (and sinks). Therefore the samples are poorly ‘labelled’ regardless of good practices followed in any lab. They’re going to mainly remain untestable hypotheses. Sequencing DNA is easy. And cheap these days. Confirming the hypothetical phylogenies with independent (non-genetic) evidence is the tricky bit in most cases. That’s what good taxonomy is about.
 
Stop thinking there's One True Chico. Look at the pictures below which are all of the same person, but which show him with different body sizes, all the cells will have been replaced, some will be genetically mutated compared to the original fertilised egg (notably in his prostate recently), his hair is different - which is the Charles?

So it is with yeast - they evolve and change just through the process of being repitched in a brewery. You can't say that the original ($$$) BRY-96 is "the" Chico - as it had never been anywhere near California when it went into a freezer at Siebel. In as much as there was ever a One True Chico, it existed for a fleeting moment after a few generations of arriving at Sierra Nevada and adapting to the conditions there. But now Sierra Nevada makes their beer with a yeast that has changed since that time.

Yeast are in a state of constant change, sometimes those changes matter to a brewer, often they don't. But changes are inevitable. Brewers try to simplify things for themselves by using names like Chico which don't capture the changes, and marketeers are even worse.

But your One True Chico does not exist. If you want to make a beer like Sierra Nevada's 2024 beers, then harvest yeast from their beer, they condition with the production strain. Assuming BRY-97 is the "Imperial M44" in the family tree above, then it's more closely related to US-05 than either of them are to WLP001 or BRY-96. Whilst I disagree with McMullan on the importance of taxonomy, I would agree with him on this - don't worry so much about the detailed taxonomy, and use the strain that works best for you.

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Of all the Chicos which one is your favorite?
 
Cheers NB.

I‘m definitely fine with using what turns out to work best and am not on a quest of the Holy Grail of The One True Chico, rather I‘m at the stage where I‘m just starting to compare same recipe with different yeast strains, and am trying to figure out which one are worth comparing.

My actual yeast quest at the moment is with the London Ale III family, how similar (or different?) Verdant, 1318, London Fog and Imperial Juice actually are, whether it‘s worth trying out the expensive liquid yeasts or if Verdant is „good/simllar enough“ and what the heck is actually in M66. Wouldn‘t happen to have any imput on that, would you?

cheers!

Josh🍻
Hey Josh, wondering if you have any results to share on the comparison of the London Ale III family. Very interested in this as well. Cheers
 
Of all the Chicos which one is your favorite?
At the top of the list would be propped up yeast from Sierra Nevada Pale Ale. It's dog slow to ferment initially though. Second would be WLP001. Wyeast 1056 is closer to US-05 than SNPA or WLP001 on my palate at least. At the end of the day though it's really all about personal preference.

With that said there's a pack of bry-97 laying around here I want to play around with and also want to play around with propping up 3 year old chico (still good as I used another tube of this for a red a few months ago) fermenting something in the 1.040-1.045 range then transfer a Cascade pale ale straight onto the yeast cake and see what happens in regards to fermentation speed.
 
I only skimmed the paper...it looked pretty dense...are there new strains in here that map to common brewing yeasts?
Not had a chance to look closely, but I think they were mostly trying to broaden geo/ecological coverage, so probably not a lot of direct relevance to brewing.
 
I only skimmed the paper...it looked pretty dense...are there new strains in here that map to common brewing yeasts?
I took some time tonight (several hours), but I didn't find any big revelations relevant to homebrewers. Very few commercial strains are named in the data, and the ones that are named are just repeats of previous studies by Gallone, Fay, etc. Still, it prompted me to take a deeper look at things, which resulted in a couple tweaks to my table (which weren't really new information but things that I should have incorporated a while ago already). All interesting nonetheless to see how tiny a slice that beer (and wine) are to the Sacch. c species as a whole. I mean, here's the two slices from a big circle of life:

1732332950544.png


(the darker red clade is "12. Belgium Beer 1"), and

1732333015034.png


(the yellow super clade is "S2. Beer" which includes most of the yeasts we use today).

One tidbit that is kind of interesting to me is that some of the oddest Belgian yeasts we use (from "12. Belgium Beer 1") are very closely related to the yeasts typically found in...

French cheeses.

That I thought was pretty cool. I wonder if they have some capability of eating lactose? Maybe that's why most of these have such high apparent attenuation in the 90-95% range or thereabouts?

Have a good night, and a good Thanksgiving to those who celebrate. :)
 
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