noob BIAB question - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > noob BIAB question

Reply
 
Thread Tools
Old 04-10-2010, 12:14 AM   #1
Pommy
Recipes 
 
May 2009
Auckland, NZ
Posts: 727
Liked 11 Times on 10 Posts



I only have one pot that is big enough for brewing (5 gallons). My qusetion is, can I do my partial mash then when I take the bag out to drain raise the heat up for the sparge? What are the effects of doing it this way?

 
Reply With Quote
Old 04-10-2010, 12:27 AM   #2
Blauvelt
Recipes 
 
Apr 2010
Nova Scotia
Posts: 36

If you raise the temp higher then 170 F then you will start releasing somewhat harsh tannins from the grains.

it otherwise sounds like a good plan to me.

 
Reply With Quote
Old 04-10-2010, 12:28 AM   #3
phishfood
Recipes 
 
Sep 2009
FL
Posts: 152
Liked 5 Times on 5 Posts


Not a direct answer to the question you asked, but I have been able to do partial mashes and mini all grain mashes with a 10 quart (2.5 gallon) stockpot, then use my big pot for sparging and boiling. A smaller stockpot like that is really cheap.

Edit: Also, part of the purpose of the sparge is to rinse the sugar off of the grains with fresh water. Using the mash water as sparge water would "probably" leave a lot of the sugars stuck to the grains, and make your extraction efficiency pretty low. I have heard of "no sparge" brewing, but am too new and unknowledgable to comment on that type of brewing


 
Reply With Quote
Old 04-10-2010, 12:39 AM   #4
Blauvelt
Recipes 
 
Apr 2010
Nova Scotia
Posts: 36

I would think that if you raise the temp of all the wort, all the residual sugar on the grain will just be the same concentration as the rest of the wort.

terrible wording. Would not the sugar on the grain be just as sugary as the rest of the wort?
I think I've failed in conveying my theory.

 
Reply With Quote
Old 04-10-2010, 12:40 AM   #5
McGarnigle
Recipes 
 
Jul 2008
NYS
Posts: 1,922
Liked 68 Times on 58 Posts


phishfood is right about fresh water, I think. You'd get better efficiency by dunk-sparging the bag in clean, hot water in a separate pot, then combine your two batches of wort.

But the original BiaB method leaves the bag in at the end of the mash, raises the heat, and then removes it once the wort hits 170 or so.

 
Reply With Quote
Old 04-10-2010, 01:47 AM   #6
Pommy
Recipes 
 
May 2009
Auckland, NZ
Posts: 727
Liked 11 Times on 10 Posts


So although it would result in a low efficiency it could work? maybe ill just use a few lb of grains for my PMs for now then until I can get my efficiency up. Another option I thought of was using a fermenter to spage as its the only contaier I have that would be big enough really, I could use boiling water from the (tea/coffee) kettle and then add it back for my boil... Sound like a plan?


 
Reply With Quote
Old 04-10-2010, 02:12 PM   #7
BrookdaleBrew
Recipes 
 
Nov 2008
Posts: 833
Liked 11 Times on 11 Posts


I'm doing my first partial mash for my next batch. I have the same problem as you in that I only have 1 large pot. My plan is to mash in my extra fermentor bucket (you could also use a bottling bucket), heat up my sparge water while I mash my grain then dunk sparge.

 
Reply With Quote
Old 04-10-2010, 10:28 PM   #8
Pommy
Recipes 
 
May 2009
Auckland, NZ
Posts: 727
Liked 11 Times on 10 Posts


Yeah I'm thinking that might be my best idea. Sounds the only way of doing it that I can think of.

 
Reply With Quote
Old 04-11-2010, 02:01 AM   #9
cell
Recipes 
 
Feb 2008
Montreal, Canada
Posts: 102
Liked 2 Times on 2 Posts


I use a 4 gallon pot, but I make 2 gallon batch. After the 90 min mash, I raise the temperature to 170F and then I take the bag out. After, I add water and LME.

 
Reply With Quote
Old 04-11-2010, 01:19 PM   #10
breez7
Recipes 
 
Mar 2010
NE OH
Posts: 312
Liked 1 Times on 1 Posts


I do a thin mash in 5 gal. of water in my large pot, then I heat up about two gallons of water to 170 on my stove with a smaller pot and when I'm done with the mash I pull the bag out, let it drain, then just slowely pour the 2 gallons over the grains to sparge. I easily get over 70% eff. with this.

hope that made sense... kinda hung over

 
Reply With Quote


Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
BIAB question craigd All Grain & Partial Mash Brewing 21 01-23-2011 04:15 PM
False bottom for BIAB question mrgstiffler Equipment/Sanitation 3 12-20-2009 02:48 PM
BiaB mash question ISLAGI All Grain & Partial Mash Brewing 20 06-02-2009 06:58 PM
BIAB Mill question Daddymem All Grain & Partial Mash Brewing 16 04-26-2009 02:08 AM
not so noob, noob question loopmd Extract Brewing 11 12-07-2005 06:03 PM


Forum Jump