Can I re-heat up beer to convert unfermentables?? - Home Brew Forums
Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > Can I re-heat up beer to convert unfermentables??

Reply
 
Thread Tools
Old 07-09-2013, 10:47 PM   #1
seedyram
Recipes 
 
Feb 2013
Toronto, Ontario
Posts: 5



Hello cyberbrewers!

So I have a question.. pretty simple.
Can I heat up a beer to mashing temperature, and add some amylase to convert some unfermentable sugars that I got from botching my mash the first time (uncalibrated thermometer.stupid.)???

Anyway if this would work and I could just pitch again that would be cool as I already have 15 gallons of this sweet, pseudo alcoholic, children's "beer" kegged, and it would be great if I could salvage the last 5gs.

Any advice (that isn't to get my **** together) is greatly appreciated.

 
Reply With Quote
Old 07-09-2013, 10:53 PM   #2
mdgagne
Recipes 
 
Jun 2011
South China, Maine
Posts: 277
Liked 17 Times on 15 Posts


Alpha Amylase should covert unfermentables without heat, AFAIK.
__________________
http://www.malthomebrewclub.org

 
Reply With Quote
Old 07-09-2013, 11:28 PM   #3
daksin
HBT_SUPPORTER.png
 
daksin's Avatar
Recipes 
 
Aug 2011
San Diego, CA
Posts: 4,617
Liked 354 Times on 308 Posts


mdgagne is correct, but if the beer has already fermented, the pH may have dropped quite a bit. You shouldn't need to heat it up, but check to make sure that AE will even work in fermented beer.
__________________
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 07-10-2013, 01:02 AM   #4
seedyram
Recipes 
 
Feb 2013
Toronto, Ontario
Posts: 5


I tried the amylase in the fermentor, and got nothing.

If I cannot get this thing down to a decent FG (it's at 1.030 ATM), any ideas of what do with it are welcome.

 
Reply With Quote
Old 07-10-2013, 01:11 AM   #5
Travestian
HBT_SUPPORTER.png
 
Travestian's Avatar
Recipes 
 
Feb 2013
Charleston, South Carolina
Posts: 503
Liked 59 Times on 51 Posts


Re-pitch another yeast that has high attenuation.

 
Reply With Quote
Old 07-10-2013, 03:48 PM   #6
ArcLight
Recipes 
 
May 2011
Millburn, NJ
Posts: 1,379
Liked 126 Times on 96 Posts


Quote:
Originally Posted by seedyram View Post
I tried the amylase in the fermentor, and got nothing.

If I cannot get this thing down to a decent FG (it's at 1.030 ATM), any ideas of what do with it are welcome.
1 - add in yeast nutrient
2 - gently stir it up to resuspend the yeast
3 - warm up the yeast to 75 F to see if that gets them going

if that fails

4 - Make a 2 liter starter of a yeast that has high attenuation. (you want a lot of yeast)

 
Reply With Quote
Old 07-10-2013, 03:53 PM   #7
mdgagne
Recipes 
 
Jun 2011
South China, Maine
Posts: 277
Liked 17 Times on 15 Posts


You could also pitch a Brett. strain and make it funky. Brett'll eat anything
__________________
http://www.malthomebrewclub.org

 
Reply With Quote
Old 07-10-2013, 08:47 PM   #8
maida7
Recipes 
 
Nov 2009
Asheville, NC
Posts: 2,827
Liked 48 Times on 41 Posts


beano and a fresh pitch of active yeast and raise the temp into the 70's or 80's

 
Reply With Quote
Old 07-10-2013, 10:19 PM   #9
duboman
Recipes 
 
Jul 2011
Glenview, IL
Posts: 6,368
Liked 508 Times on 470 Posts


Refractometer or hydrometer reading, if the former use the latter, you may be surprised.
__________________
Nothing Left to do but smile and drink beer.....

The Commune Brewing Company-Perfecting the "art" of beer since 2010

 
Reply With Quote
Old 07-10-2013, 11:00 PM   #10
Bsquared
HBT_LIFETIMESUPPORTER.png
 
Bsquared's Avatar
Recipes 
 
Oct 2006
San Diego
Posts: 1,850
Liked 66 Times on 59 Posts


Sometimes its give up the goat and try again. I know its frowned upon by some, but it's quite liberating to pour out a sub par beer and start over. Just not what you did wrong and try again.

Anyway, Beta-amylase is what you will need to convert unfermentables to fermentables. Alpha is the debranching enzyme that works at higher temps to break up starch to make it more accessible to Beta.

 
Reply With Quote


Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Do i have too much unfermentables? Sniper06 Fermentation & Yeast 6 08-09-2009 03:34 PM
Unfermentables? PurdyGood Beginners Beer Brewing Forum 3 06-07-2009 06:21 PM
Does steeping too hot cause more unfermentables? Festivus Extract Brewing 11 08-10-2008 12:08 AM
Unfermentables in AG Recipe tbone All Grain & Partial Mash Brewing 4 02-04-2008 05:04 PM
unfermentables? neuron555 Extract Brewing 2 11-06-2007 11:34 PM


Forum Jump