New Giveaway - Wort Monster Conical Fermenter!

Home Brew Forums > Home Brewing Beer > General Beer Discussion > RIS half batch, half yeast?




Reply
 
LinkBack Thread Tools Display Modes
Old 07-27-2012, 04:04 PM   #1
jrodskreet
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2012
Location: lake, ms
Posts: 161
Liked 3 Times on 3 Posts
Likes Given: 7

Default RIS half batch, half yeast?

So I'm wanting to do a RIS but only 2 gallons. Of all the forums and recipes I've read almost all of them call for 2 packs of yeast for 5 gallons. So my question is, since I'm only doing a half batch ( or there about ), do I only need to use one pack of yeast? Or is there something I'm not aware of with high gravity and the amount of yeast?



__________________
jrodskreet is offline
 
Reply With Quote Quick reply to this message
Old 07-27-2012, 04:22 PM   #2
pm5k00
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2011
Location: Cibolo, TX
Posts: 918
Liked 32 Times on 29 Posts
Likes Given: 37

Default

It depends on the OG but more than likely one packet will be fine. Check mrmalty.com to be sure.



pm5k00 is online now
 
Reply With Quote Quick reply to this message
Old 07-27-2012, 04:28 PM   #3
fredthecat
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2009
Location: the world
Posts: 397
Liked 6 Times on 6 Posts
Likes Given: 72

Default

yes, as far as i know thats the case.

if someone is making say 10gallons of beer, they'd need twice as much of a yeast culture as 5 gallons. i thin for a high gravity beer however, you also want to make sure your yeast is healthy and kind of build it up towards tackling high gravity wort with a starter of some kind

__________________
fredthecat is offline
 
Reply With Quote Quick reply to this message
Old 07-27-2012, 04:30 PM   #4
trumpetbeard
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2011
Location: Rochester, New York
Posts: 77
Liked 6 Times on 5 Posts
Likes Given: 1

Default

What's your anticipated OG? Are planning on using a single pack of dry or liquid yeast?

If you're under 1.085 you could probably get away with a single pack of rehydrated dry yeast for a 2 gal batch. If you're using liquid yeast I would recommend doing a small starter. I do mostly 2.5 gallon batches and on some of my higher gravity belgiums I've done quart-2 quart starters (decanting before adding).

The general rule is that the higher the gravity the greater the number of healthy yeast cells are required for good fermentation. Mr. Malty is a good place to check pitching rates and to make sure you have adequate yeast.

__________________
trumpetbeard is offline
 
Reply With Quote Quick reply to this message
Old 07-27-2012, 04:32 PM   #5
teddy4xp
HBT_LIFETIMESUPPORTER.png
Feedback Score: 1 reviews
Recipes 
 
Join Date: Feb 2010
Location: Kailua, Hawaii
Posts: 324
Liked 3 Times on 2 Posts
Likes Given: 1

Default

I made a half batch (2.5 gallons) of a belgian specialty ale last weekend and according to mrmalty.com i still needed to pitch a full vial of white labs yeast.

__________________
teddy4xp is online now
 
Reply With Quote Quick reply to this message
Old 07-27-2012, 08:29 PM   #6
jrodskreet
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2012
Location: lake, ms
Posts: 161
Liked 3 Times on 3 Posts
Likes Given: 7

Default

thanks for all of the quick replies. I will check out mrmalty. My OG is expected from my calcs between 1.110 and 1.120



__________________
jrodskreet is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
half batch kcross13 General Beer Discussion 4 08-25-2011 03:52 PM
Half Batches? Djanvk General Beer Discussion 3 02-15-2011 03:17 AM
AHS Belgian Half Wit Monghetti General Beer Discussion 7 05-10-2010 09:18 PM
Well the first batch is done and half gone kcmadhatter General Beer Discussion 4 01-25-2009 05:15 PM
Half IPA, Half Amber Ale... Am I a bastard for wanting to brew such a creature? TXCrash General Beer Discussion 11 12-07-2008 04:26 PM