BIAB with alpha and beta rest - Home Brew Forums
Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > BIAB with alpha and beta rest

Reply
 
Thread Tools
Old 07-07-2011, 07:19 PM   #1
mfraier
Recipes 
 
Nov 2010
fenton, Michigan
Posts: 193
Liked 5 Times on 2 Posts



I want to do a marzen that calls for mashing at one temp for 30 min (140*) and then a higher temp for 30 min (158*).

Can I just do it like a single infustion mash at 140* for 30 minutes and then raise the temp with the burner to 158* and mash for the additional 30 minutes? I have a second pot I could heat water in to add and try to raise the temp.

Any help is appreciated....just my first lager and I want to get it right.



 
Reply With Quote
Old 07-07-2011, 07:37 PM   #2
emetcalf
Recipes 
 
Feb 2011
Portland, Oregon
Posts: 177
Liked 4 Times on 4 Posts


Yes, but be careful not to burn the bag/grain. And stir a lot.



 
Reply With Quote
Old 07-07-2011, 07:56 PM   #3
seabass07
Recipes 
 
Apr 2011
Brothell
Posts: 1,250
Liked 121 Times on 91 Posts


Probably better to use the second pot for heating the water. I'd be very worried about melting the bag.

 
Reply With Quote
Old 07-07-2011, 08:02 PM   #4
mfraier
Recipes 
 
Nov 2010
fenton, Michigan
Posts: 193
Liked 5 Times on 2 Posts


The kettle is much bigger than the bag, so it does not rest anywhere near the bottom. I was thinking about adding heat and warmer water to get to the second rest.....or just heating it to 158 and holding for 30 min.

 
Reply With Quote
Old 07-07-2011, 09:59 PM   #5
Mysticmead
Recipes 
 
Jan 2010
Kingston, GA
Posts: 1,342
Liked 92 Times on 62 Posts


heat it... no worries about melting the bag as long as it's not sitting on the bottom. even if it was as long as you stir non-stop it won't burn. OR... a better way to raise the heat is by doing a decoction.. I've done it that way for a hefe and it worked great.

 
Reply With Quote
Old 07-07-2011, 10:50 PM   #6
jeffmeh
HBT_SUPPORTER.png
 
jeffmeh's Avatar
Recipes 
 
Feb 2009
Posts: 2,134
Liked 208 Times on 178 Posts


I do step mashes fairly regularly with full-volume BIAB on propane. If your bag does not sit on the bottom I would not worry about it burning. I use a wire cooling rack as a stand-off on the bottom of my kettle.

The biggest challenge I have found is not overshooting the temperature. The kettle retains heat and continues raising the mash temp after you turn off the burner. Stir a lot to get an accurate temperature reading, and turn off the burner about five degrees before you achieve your desired mash temperature. If that does not get you to temp, turn on the burner for about 30 seconds, stirring, and try again. It also is not a bad idea to keep some extra cold water ready if you overshoot, and resign yourself to a longer boil.

 
Reply With Quote
Old 07-08-2011, 03:48 PM   #7
dcp27
Recipes 
 
Jan 2010
Medford, MA
Posts: 4,125
Liked 125 Times on 121 Posts


infusion, decotion (boiling about 4-5qts in either case), or the burner would all work. if you use the burner you may want to shorten the beta rest tho since it'll take some time to get up to temp.



 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Beta Glucan rest? SpanishCastleAle All Grain & Partial Mash Brewing 9 04-15-2014 12:46 AM
Partial Mash Beta-Glucan Rest? brewzombie All Grain & Partial Mash Brewing 3 02-03-2011 02:40 AM
Beta Gluten Rest Question ccudc9 All Grain & Partial Mash Brewing 5 01-15-2011 06:02 PM
another mash temp question alpha/beta killian All Grain & Partial Mash Brewing 6 10-03-2007 06:52 PM
First mini-mash performance anxiety and a Beta-Glucanase Rest Chris_K All Grain & Partial Mash Brewing 2 10-30-2006 01:09 AM


Forum Jump