Chico (US-05, 1056) and perceived peach flavor and aroma

[jeremy2027]

I made a simple Blonde Ale using US05 fermented @64*F measured in a thermowell. After kegging yesterday it is giving me a peach/apricot flavor that Im finding to be a nice mix with the recipe I can't wait until its carb'd and ready to go. I have fermented the last 5 or so batches with US05 and haven't noticed the peach/apricot at all. One was a pumpkin beer so it very well could have gotten lost within all the spices. Then there were an Ipa with Galena, Chinook and Northern Brewer, a Coffee porter ( all at 64*F) then Janets Brown (fermented at 67*F)

I think if you are expecting the flavor and plan for it in your recipe its a great tool to use. If you don't want the peach/apricot in your beer and still like the ease of US05 just ferment around 67*F and you will be good to go.

Here is the bill for the Blonde Ale I just kegged:

Type: All Grain
Batch Size: 6.00 gal
Boil Size: 8 gal
Boil Time: 60 min
Mashed at 148*F for 75 min
Brought mash to 168*F then fly sparged

Amt
8 lbs Pale Ale Malt 2-Row (Briess) (3.5 SRM) Grain 1 86.5 %
12.0 oz Carapils (Briess) (1.5 SRM) Grain 2 8.1 %
8.0 oz Vienna Malt (Briess) (3.5 SRM) Grain 3 5.4 %
0.50 oz Magnum [15.20 %] - Boil 60.0 min Hop 4 23.4 IBUs
0.25 oz Goldings, East Kent [5.00 %] - Boil 15.0 mi Hop 5 1.9 IBUs
1.00 Whirlfloc Tablet (Boil 5.0 mins) Fining6 -
0.25 oz Fuggles [4.50 %] - Boil 0.0 min Hop 7 0.0 IBUs
0.25 oz Goldings, East Kent [5.00 %] - Boil 0.0 min Hop 8 0.0 IBUs
1.0 pkg Safale American (DCL/Fermentis #US-05) [50.28 ml]Yeast 9

Chilled to 62*F pitched Yeast and fermented at 64*F for 14 days

Measured Original Gravity: 1.041 SG
Measured Final Gravity: 1.008 SG
Actual Alcohol by Vol: 4.3 %
Bitterness: 25.3 IBUs
Est Color: 4.1 SRM
Calories: 133.8 kcal/12oz

 

[mabrungard]

I've fermented US05 at 52F and did not find off flavors in the beer (Munich Helles). It was almost lager like.

 

[day_trippr]

Apparently, US-05 is imbued with magical powers, as a lot of folks report it conveys a rotting peach flavor if run around 60°F, many folks report it produces a palatable peach flavor if run around 63°F, and lots of folks report a neutral outcome if run at 67-68°F. And now we have a report of lager-like performance when run at 52°F.

It's miraculous!

Cheers!