Ss Brewtech’s Biggest Baddest Holiday Giveaway Ever!

Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Starters - Don't allow to ferment completely?
Thread Tools
Old 01-18-2011, 04:27 PM   #1
Feedback Score: 0 reviews
Join Date: Dec 2009
Location: Sunnyvale, CA
Posts: 165
Liked 1 Times on 1 Posts

Default Starters - Don't allow to ferment completely?

I've read that when making a starter, the reproductive phase usually is complete within 12 hours. So I assume, the idea with making a starter is to pitch once the reproductive phase is complete, not when the fermentation is complete. If I don't pitch within, say 24 hours, then I assume the yeast will continue to ferment for several days. Is it bad to allow the fermentation to continue for too long? Is it better to either pitch or cold crash your starter after 24-48 hours with the idea being that you want the yeast to save their fermenting efforts for the brew rather than working on the starter wort?

gannawdm is offline
Reply With Quote
Old 01-18-2011, 05:30 PM   #2
/bɪər nɜrd/
Feedback Score: 1 reviews
MalFet's Avatar
Join Date: May 2010
Location: NYC / Kathmandu
Posts: 8,546
Liked 1429 Times on 948 Posts
Likes Given: 690


There's some debate about this. Some argue for pitching at high krausen, allowing the yeast to hit the wort when it is at its peak of activity. Others argue for pitching after the yeast has gone dormant for a few days, giving the yeast time to build up its glucose and trealose reserves.

Personally, I like to cold crash my starters so I can decant off the starter wort, which puts me more in the second camp. But, I'll typically add about a half cup of wort to my starter when I'm setting up to brew, just to get the sleepy yeast moving a little bit.

MalFet is offline
Reply With Quote
Old 01-18-2011, 06:44 PM   #3
Feedback Score: 0 reviews
Join Date: Dec 2010
Location: Grand Rapids, Michigan
Posts: 322
Liked 3 Times on 3 Posts
Likes Given: 4


I just pour my entire one litre starter into my 5 gallon extract from 18-24 hours after starting it up....
~ BIAB : All Grain Made Easy ; Mash, Sparge, Boil all in the same Kettle ~ all you need is a bag and a hook!
bschoenb is offline
Reply With Quote
Old 01-18-2011, 08:09 PM   #4
Feedback Score: 1 reviews
Golddiggie's Avatar
Join Date: Dec 2010
Location: Between here and there, and everywhere
Posts: 11,943
Liked 485 Times on 423 Posts
Likes Given: 266


Most activity I've had, after using a starter, was one that had yeast pitched in about 24 hours before it was used. I used about 1/2 cup DME to ~1 quart water in that one. I didn't even boil it up for long (a few minutes at most) then just let it cool down enough to be safe for the yeast.

Yeast was post-lag in <2 hours and blowing foam through the airlock in about 6 hours. Luckily I had tubing to use for a blow-off...

I did swirl the starter every time I walked past it (for 5-10 seconds)... I'll probably try to replicate the results with a future brewing.

That being said, I've had very strong fermentation going after letting the yeast sit in the starter for ~2 days (sometimes a little longer). Letting it build up a nice size colony. Generally speaking, I plan a brew day for the start of the weekend, making a starter for the yeast so that it should be good for that day. So if I'm planning on brewing on Saturday, then Thursday evening, or early Friday, I put the yeast into the starter. That way, if the yeast needs more time to get fully ready for what it will be pitched into, I can move the brew day to Sunday without issue.

Once I make/get a stir plate, I'll probably have more consistent results with the starters and yeast.
Golddiggie is offline
Reply With Quote
Old 01-19-2011, 12:58 AM   #5
Feedback Score: 0 reviews
Join Date: Dec 2010
Location: Langley, BC
Posts: 934
Liked 24 Times on 23 Posts
Likes Given: 9


I like to cold-crash and decant my starters. Not for any real scientific reason, only because then I can make the starter like 1-2 weeks in advance (whenever I have time) and then throw it in the fridge when fermentation is over. Just simpler than trying to time when brewday will actually be.
theredben is offline
Reply With Quote
Old 01-19-2011, 02:11 AM   #6
Doe Re Mi Beer
Feedback Score: 0 reviews
schweaty's Avatar
Join Date: Sep 2008
Location: Glass City
Posts: 1,803
Liked 42 Times on 20 Posts
Likes Given: 29


I prefer the crash and decant method no matter how large the starter is. I will allow 18-24 hours on my stir-plate before stepping up or crashing. I've always had great success with this method.

schweaty is offline
Reply With Quote

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Starters for starters! MRmac Fermentation & Yeast 2 12-04-2010 02:46 PM
Multiple Starters? valicious Fermentation & Yeast 2 03-13-2010 09:31 PM
All-Grain starters? HomerJR Fermentation & Yeast 8 01-13-2010 04:20 PM
Confused about starters... scone Fermentation & Yeast 16 12-24-2009 10:39 PM
Starters, here I come! RIBeer Fermentation & Yeast 2 11-16-2009 07:30 PM

Forum Jump

Newest Threads