brew in a bag question- Sparging? - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > General Beer Discussion > brew in a bag question- Sparging?

Reply
 
Thread Tools
Old 01-04-2012, 07:17 PM   #1
thisgoestoeleven
Recipes 
 
Jan 2011
Fair Haven, VT
Posts: 355
Liked 6 Times on 5 Posts



I just called my LHBS to find out if they sell grain bags big enough to doing a BIAB setup with my 8 gallon pot. Maybe I'm misunderstanding the BIAB process altogether, but the way I explained it he said wouldn't work. As I understand BIAB brewing, you mash with the full volume of your boil and skip the sparging step, instead of mashing 3ish gallons, then sparging with the remaining boil volume. He told me that this system wouldn't work well, because mashing with that much water would give you a thinner mash and negatively impact extraction of sugars and enzymes. I see the number of people, both on here and in youtube tutorials, that have good results with the BIAB method without investing in multiple pots, a mash tun, etc, and I wonder if there's any truth to what he's saying. I'm not knocking him or saying he doesn't know, I'm just trying to educate myself and get multiple perspectives.

Reason: typo

 
Reply With Quote
Old 01-04-2012, 07:19 PM   #2
JeepDiver
Recipes 
 
Apr 2009
Highlands Ranch, CO
Posts: 1,326
Liked 147 Times on 115 Posts


Many people sparge, but true BIAB you do not sparge, just do a full volume mash, remove the bag and start the boil. And yes it makes perfectly fine beer.

If you can direct fire without melting your bag, you can get a little better effiancy by doing a mashout, but you don't have too.

 
Reply With Quote
Old 01-04-2012, 07:25 PM   #3
BryceL
Recipes 
 
Feb 2011
Yorba Linda, CA
Posts: 916
Liked 46 Times on 38 Posts


I also hear of great results from full volume BIAB. I BIAB with my 1.25-1.33 qt/lb ratio and then sparge, only because my 8 gallon pot isn't big enough to do the full volume along with the grain. I've made some great beer this way!

 
Reply With Quote
Old 01-04-2012, 07:30 PM   #4
cricky101
Recipes 
 
Jan 2011
St. Paul, MN
Posts: 302
Liked 6 Times on 6 Posts


Quote:
Originally Posted by BryceL View Post
I also hear of great results from full volume BIAB. I BIAB with my 1.25-1.33 qt/lb ratio and then sparge, only because my 8 gallon pot isn't big enough to do the full volume along with the grain. I've made some great beer this way!
That's what I do, too. I've got 2, 7.5 gallon pots. Mash in one, and then sparge in the other. Dump the contents of one into the other and boil.

I'd like to get a large pot to do full-volume BIAB, but it's not in the budget right now, and this system seems to be working fine for me.
__________________
-------------------
"A witty saying proves nothing." - Voltaire

 
Reply With Quote
Old 01-04-2012, 07:48 PM   #5
erikpete18
Recipes 
 
Apr 2009
Seattle, WA
Posts: 830
Liked 32 Times on 30 Posts


I think some people will also plan on a slightly lower efficiency doing no-sparge BIAB, although that's not to say that one couldn't get great efficiency anyways. With our costs, a lot of times tossing in another few dollars of base grains is probably well worth the time saved not doing a sparge. At first if nothing else you may want to have some dry extract on hand in case you wind up short, but after a few tries I bet you figure out what works for your system and can do no-sparge without a problem.

zebbielm12 Likes This 
Reply With Quote
Old 01-04-2012, 08:19 PM   #6
RM-MN
HBT_SUPPORTER.png
Recipes 
 
Nov 2010
Solway, MN
Posts: 9,799
Liked 1775 Times on 1408 Posts


Quote:
Originally Posted by erikpete18 View Post
I think some people will also plan on a slightly lower efficiency doing no-sparge BIAB, although that's not to say that one couldn't get great efficiency anyways. With our costs, a lot of times tossing in another few dollars of base grains is probably well worth the time saved not doing a sparge. At first if nothing else you may want to have some dry extract on hand in case you wind up short, but after a few tries I bet you figure out what works for your system and can do no-sparge without a problem.
I've done some batches each way. No sparge works well for me with a smaller batch because I can really squeeze the wort out of the bag and since wort is what we are after, every little extra I can get out adds to the efficiency.

I have more trouble doing this with a 5 gallon batch because I just can't get my hands all the way around the bag to squeeze. With my 7 1/2 gallon pot, putting in 6 1/2 gallons of water and then trying to mix in 10 pounds of grain puts me almost over the top of the pot so I've begun modifying the BIAB by only using 5 gallons in the pot for mashing and then adding grains to another pot with some water to sparge followed by squeezing. The last one I did I used cold water for the sparge because I was tired of burning my hand while squeezing and figured the loss of efficiency was worth protecting my hands. This turned out to be my best efficiency yet at 85%.

 
Reply With Quote
Old 01-04-2012, 09:30 PM   #7
HenryKDuff
 
HenryKDuff's Avatar
Recipes 
 
Jan 2010
Buffalo, NY
Posts: 38

I got good results using BIAB with a single dunk sparge. I only moved to a more conventional AG system due to the bag limitations (couldn't find a big enough bag to do bigger beers) and realizing how easy it was to convert my 10 gallon cooler with a ball valve and kettle screen. I got efficiencies in the low to mid 70's.

 
Reply With Quote
Old 01-04-2012, 10:03 PM   #8
cricky101
Recipes 
 
Jan 2011
St. Paul, MN
Posts: 302
Liked 6 Times on 6 Posts


Quote:
Originally Posted by RM-MN View Post
.... The last one I did I used cold water for the sparge because I was tired of burning my hand while squeezing and figured the loss of efficiency was worth protecting my hands. This turned out to be my best efficiency yet at 85%.
You just blew my mind. I am so doing that.


__________________
-------------------
"A witty saying proves nothing." - Voltaire

 
Reply With Quote
Old 01-04-2012, 10:11 PM   #9
daksin
HBT_SUPPORTER.png
 
daksin's Avatar
Recipes 
 
Aug 2011
San Diego, CA
Posts: 4,617
Liked 357 Times on 311 Posts


I'm a BIABer who does a single batch sparge. My efficiencies are right about where you would expect from a MLT/fly sparge, near 75%, pretty consistently. I'm the same as cricky- I have two big pots and heat up my sparge water (just preboil volume -strike water + absorbed water) on the stove during the mash. I set the bag on a grill grate over the first pot, let it drain and squeeze, and then move it over to the sparge pot.
Combine the two and then boil. Works great.
__________________
I can't be arsed to keep up this list of what's in the fermenters, but hey, check out the cool brewery I own!

twitter.com/2kidsbrewing .. facebook.com/2kidsbrewing .. 2kidsbrewing.com

 
Reply With Quote
Old 01-04-2012, 10:28 PM   #10
LandofOZ
HBT_LIFETIMESUPPORTER.png
Recipes 
 
Oct 2008
OZ of course
Posts: 160
Liked 3 Times on 3 Posts


if you are able to find a large enough collander to fit your pot it is well worth the money to sit your bag in while it drains and cools., and you can save a little water back to pour over the bag as it sits for a pouring sparge. I leave no wort in my grain bag by the time ime done letting it cool and drain and squeezing.
__________________
Land Of OZ, Toto wake up where not at the bar anymore!!!!

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Gravity readings after sparging Wino24 General Beer Discussion 3 11-07-2010 02:49 AM
Sparging Question nickmv General Beer Discussion 4 10-18-2010 12:23 AM
What's the best 52-60 quart cooler for sparging? thrstyunderwater General Beer Discussion 7 09-19-2010 05:05 AM
wort near boil while sparging KyleWolf General Beer Discussion 7 06-13-2010 06:52 PM
Sparging rye SUCKS... Dude General Beer Discussion 17 03-23-2007 03:28 AM


Forum Jump