Can I referment on top of the yeast once I rack out? - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Can I referment on top of the yeast once I rack out?

Reply
 
Thread Tools
Old 05-03-2013, 02:09 PM   #1
drrader5
Recipes 
 
May 2013
Posts: 7


I was going to brew a new batch tomorrow, and rack my current batch into my secondary. I was thinking about putting my new batch into the primary with the current yeast that is in it. Does anyone see any problems with doing this, this particular yeast has been awesome?

 
Reply With Quote
Old 05-03-2013, 02:09 PM   #2
Revvy
Post Hoc Ergo Propter Hoc
HBT_LIFETIMESUPPORTER.png
 
Revvy's Avatar
Recipes 
 
Dec 2007
"Detroitish" Michigan
Posts: 40,921
Liked 3189 Times on 1884 Posts


It's quite common.
__________________
Like my snazzy new avatar? Get Sons of Zymurgy swag, here, and brew with the best.

Revvy's one of the cool reverends. He has a Harley and a t-shirt that says on the back "If you can read this, the bitch was Raptured. - Madman

I gotta tell ya, just between us girls, that Revvy is HOT. Very tall, gorgeous grey hair and a terrific smile. He's very good looking in person, with a charismatic personality... he drives like a ****ing maniac! - YooperBrew

 
Reply With Quote
Old 05-03-2013, 02:12 PM   #3
el_horno
Recipes 
 
Aug 2012
Durham, North Carolina
Posts: 197
Liked 19 Times on 16 Posts


Like Rev says quite common, and you will be impressed with how quickly and vigorously fermentation begins. It still impresses me!

 
Reply With Quote
Old 05-03-2013, 02:15 PM   #4
Revvy
Post Hoc Ergo Propter Hoc
HBT_LIFETIMESUPPORTER.png
 
Revvy's Avatar
Recipes 
 
Dec 2007
"Detroitish" Michigan
Posts: 40,921
Liked 3189 Times on 1884 Posts


Quote:
Originally Posted by el_horno View Post
Like Rev says quite common, and you will be impressed with how quickly and vigorously fermentation begins. It still impresses me!
Yeah, even within a day.Someone posted in a thread yesterday that it had been 36 hours and he didn't see any "activity." And was worried, and of course we told him the only activity that was accurate and meant anything was a decrease in gravity as monitored by a hydrometer reading.

He took one (which he should have done before he started a panic thread) and it turned out it was fully done.
__________________
Like my snazzy new avatar? Get Sons of Zymurgy swag, here, and brew with the best.

Revvy's one of the cool reverends. He has a Harley and a t-shirt that says on the back "If you can read this, the bitch was Raptured. - Madman

I gotta tell ya, just between us girls, that Revvy is HOT. Very tall, gorgeous grey hair and a terrific smile. He's very good looking in person, with a charismatic personality... he drives like a ****ing maniac! - YooperBrew

 
Reply With Quote
Old 05-03-2013, 02:17 PM   #5
Yooper
Ale's What Cures You!
HBT_ADMIN.png
 
Yooper's Avatar
Recipes 
 
Jun 2006
UP of Michigan, Winter Texan
Posts: 69,420
Liked 7845 Times on 5497 Posts


I've done it in the past, with pretty good results. I always did it going from a small beer (like a 4% ABV beer) to a bigger beer (like a 9% ABV beer). I never had any problems.

But then I started learning more about yeast and reproduction and yeast health, and checked pitching rates. Normally, just about a cup of the yeast cake is actually enough for the next batch but I use a yeast pitching calculator (like mrmalty.com's) to make sure it's the right amount.

Normally I can use a cup of the yeast in the next batch, and save the rest in sanitized mason jars, so I get about 10 batches out of one package of yeast.

Here's some info on this: http://www.homebrewtalk.com/f163/why...t-cake-166221/ and http://www.homebrewtalk.com/f163/yea...strated-41768/
__________________
Broken Leg Brewery
Giving beer a leg to stand on since 2006

MannyZ Likes This 
Reply With Quote
Old 05-03-2013, 02:37 PM   #6
drrader5
Recipes 
 
May 2013
Posts: 7

Sounds good, I had my airlock going crazy within 10 hours of pitching the yeast so I thought it would be good to use again, and the only thing special I did was make a yeast starter. The batch I brew tomorrow will only be my second batch ever, so I tend to come up with questions. I really appreciate everyone being willing to give advice.

 
Reply With Quote
Old 05-03-2013, 05:50 PM   #7
Jints07
Recipes 
 
Mar 2013
Posts: 34
Liked 1 Times on 1 Posts


If you are brewing two different types of beers how do you avoid mixing the "flavor" from the first beer with the second? I.e. isn't it the case that there will be some hops material and sludge mixed with the yeast cake from the first batch? I'm a total newb so forgive me if this question is dopey.

 
Reply With Quote
Old 05-03-2013, 05:55 PM   #8
Yooper
Ale's What Cures You!
HBT_ADMIN.png
 
Yooper's Avatar
Recipes 
 
Jun 2006
UP of Michigan, Winter Texan
Posts: 69,420
Liked 7845 Times on 5497 Posts


Quote:
Originally Posted by Jints07 View Post
If you are brewing two different types of beers how do you avoid mixing the "flavor" from the first beer with the second? I.e. isn't it the case that there will be some hops material and sludge mixed with the yeast cake from the first batch? I'm a total newb so forgive me if this question is dopey.
It's not dopey at all!

First, if you do reuse the yeast cake (or a portion of it), generally the flavor from the impact from that tiny amount of debris is unnoticeable. It's a small amount, and you're generally putting 5 gallons of wort into it. So it's a minimal flavor impact, if any at all.

Secondly, I normally do NOT use the entire yeast cake. I often use the process I linked to above called "yeast washing illustrated", where you rinse the debris from the yeast cake and just keep the nice yeast. Then I put that yeast in about 4-6 mason jars and store in my fridge. And each one of those jars makes about 2 batches of beer for me.
__________________
Broken Leg Brewery
Giving beer a leg to stand on since 2006

 
Reply With Quote
Old 05-03-2013, 10:59 PM   #9
BigFloyd
 
BigFloyd's Avatar
Recipes 
 
Dec 2012
Tyler, Texas
Posts: 5,265
Liked 759 Times on 652 Posts


Quote:
Originally Posted by Yooper View Post

Secondly, I normally do NOT use the entire yeast cake.
+1. Unless your second beer is of a very high gravity, about 20-25% of the cake is plenty for an ale (40-50% for a lager) and allows for the yeast to go through their normal phases. Harvest and rinse the rest for later batches. All you need is a sanitized plastic spoon and some canning jars. Having a bunch of jars with boiled/chilled water on hand makes it pretty easy.

Be ready with a blow-off tube since the second ferment may be a bit enthusiastic.

One of these days, I'll get inspired to do a really big beer like a barleywine or an imperial something or other. Instead of doing a series of large starters on the stirplate, I'll start by making a 1.045-ish beer and then use the whole yeast cake for the high-gravity batch. That's like making a 5-gallon starter that you get to drink.
__________________
Good Temp Control -----> Happy Yeast ------> Tasty Brew

 
Reply With Quote
Old 05-03-2013, 11:06 PM   #10
Cathedral
HBT_SUPPORTER.png
 
Cathedral's Avatar
Recipes 
 
Dec 2012
Toledo, Ohio
Posts: 913
Liked 282 Times on 200 Posts


Is there any sort of time "limit" on how long the original beer was in primary before you shouldn't use it for another batch?

For example, if I've had my IIPA in primary for three weeks, would the yeast possibly be too dormant (or dead) to re-ferment another batch? Five weeks? Longer?

And for the people who just pour new beer back onto the whole old cake, do you not sanitize the carboy? Or take the cake out, sanitize the bottle, then put the cake back in?
__________________
TOOTH:HURTY Picobrewery
On Deck:
Primary: empty :(
Kegged: empty :(

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Rack on top the yeast? BetterSense General Techniques 5 01-04-2012 05:07 AM
Trying To Referment Bottled Beer scottmd06 Brew Science 20 04-07-2011 07:04 PM
can I rack onto this yeast cake ryan0914 All Grain & Partial Mash Brewing 5 10-23-2010 03:36 AM
Ok to rack beer and harvest yeast the next day? Rick500 General Techniques 7 06-16-2009 03:31 AM
3 months in primary - referment in bottle? ipscman General Techniques 5 04-06-2009 08:16 PM


Forum Jump