Can I use half of the yeast from kit? - Home Brew Forums
Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Can I use half of the yeast from kit?

Reply
 
Thread Tools
Old 01-30-2013, 12:29 AM   #1
level60
Recipes 
 
Jan 2013
Posts: 8



Hi,

I've just purchased a Muntons gold imperial stout kit online. It come with two cans of 1.5kg extract and a pack of dry yeast (5-7g), 5 gallon batch.


My question is can I use half of the yeast that it came with if I brew 2.5 gallon? (one can of extract)


I've read that dry yeast shouldn't be use a starter, but is there way i could "multiply" or "boost" the cell count??


Thanks



 
Reply With Quote
Old 01-30-2013, 12:34 AM   #2
masskrug
HBT_SUPPORTER.png
 
masskrug's Avatar
Recipes 
 
Sep 2012
, Florida
Posts: 1,396
Liked 217 Times on 148 Posts


You could. What are you saving the other half for? Pitch it all.


__________________
Google Maps Water Report

level60 Likes This 
Reply With Quote
Old 01-30-2013, 02:32 AM   #4
level60
Recipes 
 
Jan 2013
Posts: 8


Thanks for the response, I'm planning to do two 2.5 gallon batch, one with 1.5kg extract + oats, and the other just the 1.5kg extract.

Is this a good idea? or should I just do 5 gallon in one batch without messing it?

 
Reply With Quote
Old 01-30-2013, 02:41 AM   #5
C-Rider
Senior Member
HBT_LIFETIMESUPPORTER.png
 
C-Rider's Avatar
Recipes 
 
Feb 2011
Wai, Hawaii
Posts: 3,305
Liked 277 Times on 225 Posts


Quote:
Originally Posted by Yooper View Post
5 grams is barely enough for 2.5 gallons. Use it all. If it's 7 grams, that's better.
If 7 grams is enough for a 5 gallon brew why would 5 grams not be enough for a 2.5 gallon brew?
__________________
Kaiser Ridge Brewing
-------------------------
Bottled in the refer: Dunkelweizen
Largering in refer: Oktoberfest
Bottled conditioning: Irish Red
Bottled conditioning Old Glory Stout
Bottled in the refe: American Imperial Stout

.

level60 Likes This 
Reply With Quote
Old 01-30-2013, 02:49 AM   #6
Bamsdealer
Recipes 
 
Apr 2012
Collegeville, Pa
Posts: 909
Liked 44 Times on 41 Posts


You might want to hold off on the cereal grains unless you can do a partial mash. Oats need enzymes from some base malt to convert the starch, otherwise you might end up with a hazy brew. If you want to experiment with a couple smaller batches, use some cocoa powder, vanilla or coffee after primary fermentation is over and skip the oats.

level60 Likes This 
Reply With Quote
Old 01-30-2013, 02:54 AM   #7
Yooper
Ale's What Cures You!
HBT_ADMIN.png
 
Yooper's Avatar
Recipes 
 
Jun 2006
UP of Michigan, Winter Texan
Posts: 68,522
Liked 7371 Times on 5211 Posts


Quote:
Originally Posted by C-Rider View Post
If 7 grams is enough for a 5 gallon brew why would 5 grams not be enough for a 2.5 gallon brew?
It's not. Normally, you'd use 11 grams for a 5 gallon batch.
__________________
Broken Leg Brewery
Giving beer a leg to stand on since 2006

 
Reply With Quote
Old 01-30-2013, 03:43 AM   #8
level60
Recipes 
 
Jan 2013
Posts: 8


Thanks a lot for the tips,

I was thinking of a simple partial mash - soak about a pound of oat in hot water then boil and mix with extract. This will add body/creamy finish to the beer am I right?

and more about the dry yeast... if yeast can be washed from the fermenter why can't it grow from the starter right before start??

Cheers

 
Reply With Quote
Old 01-30-2013, 04:22 AM   #9
Bamsdealer
Recipes 
 
Apr 2012
Collegeville, Pa
Posts: 909
Liked 44 Times on 41 Posts


Without getting into too much chemistry, The oats need to be mashed with malt...not just steeped in water. You won't get any conversion from the starch. If you can get your hands on a pound or two of two row malt to steep with the oats, youll be in business.

A good idea if you want to wait a couple weeks between brews, save the yeast generated from the first half batch and use that for the second beer.

level60 Likes This 
Reply With Quote
Old 01-30-2013, 04:48 AM   #10
BigFloyd
Recipes 
 
Dec 2012
Tyler, Texas
Posts: 5,268
Liked 758 Times on 651 Posts


Are you planning on doing the 2.5 gallon batches back-to-back?

If you do, use the whole 7g packet in the first batch.

While you're heating up your boil for the second batch, bottle the first batch, leaving the trub sitting in your fermenter (which I'm guessing is a Mr. Beer LBK).

Dump the cooled (like 66-68*F) 2.5 gallons of wort of the second batch atop the yeast cake that's already in the fermenter. Please DO NOT do the Mr. Beer thing of putting ice cold water in the LBK and dumping hot wort on top of it. That won't work for the second batch. Everything you dump on top of the old yeast cake needs to be adjusted to match its temp (+/- 5*F).



level60 Likes This 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
RIS half batch, half yeast? jrodskreet General Beer Discussion 5 07-27-2012 08:29 PM
Half still sweet, half carb'd dry cider, will this work? BierKoning Cider Forum 7 08-18-2011 08:21 AM
Good/bad idea? Bottling half then dry hopping half of the primary. homebrewjapan Beginners Beer Brewing Forum 8 03-23-2009 02:42 AM
Combining Yeast/Adding yeast half way through fermentation? humann_brewing Recipes/Ingredients 2 02-04-2009 04:54 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 05:26 PM


Forum Jump