Starter Step-up help - Home Brew Forums
Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Starter Step-up help
Cool Brewing Giveaway - Supporting Membership Drive & Discount

Reply
 
Thread Tools
Old 01-09-2013, 01:00 AM   #1
Sayers
Recipes 
 
Nov 2011
Posts: 31



Ok fellows.
I'm Brewing Saturday. a 1.070 traditional bock. My HBS had one yeast of 833 and it's best before date was Jan 5 2013. According to Mr. Malty that leaves it at 10% viable. How, and is it possible, can I come up with the 510 billion cells I need for a 20 liter batch by Saturday. I don't have a stirplate, yet, but I do shake it and do have an 02 tank and and airation stone. Any help would be appreciated.



 
Reply With Quote
Old 01-09-2013, 01:13 AM   #2
itsme6582
Recipes 
 
Nov 2009
Cleveland
Posts: 812
Liked 22 Times on 20 Posts


  • Mr Malty calculates 255 billion cells for 1.07 and 20 L
  • With O2 at start you only need 3 liters of starter, if you shake it you need a little more than 2
  1. Make a 1 liter starter. Hit it with O2 and shake it when you can. Wait 2 days.
  2. Make 2 1 liter starters with no yeast. Split your initial starter into the 2 new starters.
Should be ready by the time you pitch Saturday
You can buy pop bottles for your starters. They're cheap and work great.

..... Just noticed it also says you need a whole lot of vials. Get some new yeast.



 
Reply With Quote
Old 01-09-2013, 01:20 AM   #3
tabing75
Recipes 
 
Nov 2011
st. louis, missouri
Posts: 32
Liked 1 Times on 1 Posts


http://www.yeastcalc.com/

i stepped up a wyeast 2565 yeast that was 6 months old. it was also 10% viability. i started with a 1/2 liter starter and moved on to 1 liter followed by 2 liter. it took some work but i enjoyed the experiment. i used a stir plate but intermittent shaking works great also.

making a stir plate is pretty easy and fun. if you have any interest i would suggest looking into it. lots of info on here and youtube.

 
Reply With Quote
Old 01-09-2013, 01:28 AM   #4
inhousebrew
Recipes 
 
Aug 2012
minneapolis, minnesota
Posts: 1,461
Liked 127 Times on 114 Posts


http://www.yeastcalc.com/ is great! It does step ups for you which is something mr malty doesn't do.
__________________
I hate Walder Frey...

 
Reply With Quote
Old 01-09-2013, 03:47 PM   #5
Sayers
Recipes 
 
Nov 2011
Posts: 31


Thanks guys. That yeast calc program is awesome. Never heard of it before. Doing a 1/2l, then 1.5 then 1.5 then 2L and I will get the cell count that I need. Think I will make a stir plate too. Thanks again.

 
Reply With Quote
Old 01-09-2013, 04:21 PM   #6
inhousebrew
Recipes 
 
Aug 2012
minneapolis, minnesota
Posts: 1,461
Liked 127 Times on 114 Posts


Yeah, stir plates are super helpful and really easy to throw together. I had absolutely zero electrical experience before building mine and pulled it off.
__________________
I hate Walder Frey...

 
Reply With Quote
Old 01-09-2013, 04:27 PM   #7
kh54s10
HBT_SUPPORTER.png
 
kh54s10's Avatar
Recipes 
 
Aug 2011
Tiverton, Rhode Island
Posts: 9,645
Liked 1317 Times on 1084 Posts


Quote:
Originally Posted by Sayers View Post
Thanks guys. That yeast calc program is awesome. Never heard of it before. Doing a 1/2l, then 1.5 then 1.5 then 2L and I will get the cell count that I need. Think I will make a stir plate too. Thanks again.
Change the amounts if you have a vessel that will hold the right amount and you can get the number of steps down.

When I do step starters it takes 2 days per step. 24 hours to ferment, over night in the fridge, decant then next step so if I was doing your starter schecule it would take at least 8 days.



 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Should I step up starter? RUNningonbrew Fermentation & Yeast 3 12-01-2012 05:35 PM
About to step up starter. NOLA_NICK Beginners Beer Brewing Forum 3 01-07-2011 03:59 AM
Making a yeast starter - Step by Step Video johnnyc Fermentation & Yeast 2 02-05-2010 08:52 PM
How to step up a starter Wild Duk General Techniques 7 09-06-2009 04:56 PM
How can I step up my starter? allanmac00 Beginners Beer Brewing Forum 3 01-06-2009 11:39 PM


Forum Jump