Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > advice on hitting mash temp with biab?
Thread Tools
Old 04-17-2011, 05:59 PM   #1
Feedback Score: 0 reviews
Join Date: Jul 2010
Location: Pittsburgh
Posts: 467
Liked 19 Times on 10 Posts
Likes Given: 1

Default advice on hitting mash temp with biab?

So I just did my first all grain batch yesterday using the biab method. I had a quite messy brew day (pot was too small, my hydrometer broke when i tried to take a gravity reading) but my biggest problem was inconsistent temperature. I was mashing with the lid in an aluminum pot. i had quite a bit of loss of temp, it went down to 140 for a short amount of time, and when i either put the heat on very very low for a minute or two or added a quart of pretty hot water (tried both) it shot up to over 160. I tried to keep it as consistent as possible, how can i fix this problem in the future?

it is the drink of men who think
and feel no fear nor fetter
who do not drink to senseless sink
but drink to think the better
edb23 is offline
Reply With Quote
Old 04-17-2011, 06:26 PM   #2
Feedback Score: 0 reviews
eulipion2's Avatar
Join Date: Sep 2006
Location: Hawley, PA
Posts: 1,612
Liked 73 Times on 58 Posts
Likes Given: 6


First, you could insulate your kettle: put a jacket/coat or some other form of insulation around your kettle.

Second, there's always a good chance that the temp in your grain bed will be lower than the liquid surrounding the grains. While heating, make sure you stir every few minutes to keep it even (assuming you're heating your grains and your water together), and also stir a few times during your mash.

Also, do you heat your grain and ALL of your water together? That will help a bit, but if that's not what you do, and your kettle is already too small, it might be the time to upgrade to a larger one.

Primary: Schwarzbier, Vienna lager, Bohemian Pilsner

Kegged: Avery Hog Heaven clone; Brewpastor's Dark Night of the Soul; Neo-1 APA (homegrown); Yooper's Fizzy Yellow Beer; Altbier; Dry Stout

Bottled: Grodziskie; Sterling Patersbier (homegrown); Mosaic Session Brett; Smoked Wit; Saison Americain; Session Saison
eulipion2 is offline
Reply With Quote
Old 04-17-2011, 06:35 PM   #3
Feedback Score: 0 reviews
Join Date: Jan 2010
Location: Kingston, GA
Posts: 1,335
Liked 88 Times on 61 Posts
Likes Given: 139


if you use a small kettle, like 5 gallons in size, pre-heat the oven to its lowest setting, then put the kettle in there with the heat turned off. it'll hold within a couple degrees. If you have a larger pot, wrap it with something to insulate it. I use an old sleeping bag with my 10 gallon kettle and I'm making a removable insulating jacket for my keggle. this normally keeps me within a couple degrees over a 60 minute mash.

If you do have to heat during the mash, make sure you stir it non-stop while heating. this will help keep the temps closer to equal and let you see when you hit the temp you want.
Mysticmead is offline
Reply With Quote

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Modified BIAB: hitting 85%+ efficiency jaginger All Grain & Partial Mash Brewing 26 02-28-2010 03:37 PM
hitting mash temps by adding cereal mash martinworswick All Grain & Partial Mash Brewing 1 11-28-2009 07:00 PM
Any tips for hitting and maintaining your mash temp with small grain bills? Zymurgrafi All Grain & Partial Mash Brewing 10 11-24-2008 06:02 PM
Problems hitting mash temps? Sir Humpsalot All Grain & Partial Mash Brewing 12 07-03-2007 08:16 PM
Hitting mashout/sparge temp Brewiz All Grain & Partial Mash Brewing 2 01-30-2006 04:02 AM

Forum Jump