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Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > Some quick mash question
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Old 12-09-2012, 05:28 PM   #1
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Default Some quick mash question

I am 25 minutes into a 90 minute mash. I undershot my temperature by 2 degrees and the mash was thicker than I thought it should be. You guessed it, I goofed making doing the math from quarts to gallons and ended up 150 instead of 152.
Put the other gallon in now to raise the temperature some or just let it ride and add it at the batch sparge?

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Old 12-09-2012, 05:38 PM   #2
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What are you brewing? A lower mash temp will produce more fermentable sugars, so the FG will be lower (maybe only slightly).
Depending on how thick the mash is, you could have no impact, no negative impact (positive impact), or a negative. Really helps to know what you're making here.

Chances are, at 25+ minutes in, anything you do now won't change much.

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Old 12-09-2012, 05:46 PM   #3
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Originally Posted by Golddiggie View Post
What are you brewing? A lower mash temp will produce more fermentable sugars, so the FG will be lower (maybe only slightly).
Depending on how thick the mash is, you could have no impact, no negative impact (positive impact), or a negative. Really helps to know what you're making here.

Chances are, at 25+ minutes in, anything you do now won't change much.
Yeah, it's a Black IPA. I figured it didn't matter at this point anyway.
Sixteen pounds of grain mashed into 4 gallons. I don't mind the extra alcohol and I tend to like my beer a little drier. I am concerned about it being watery. It was for an upcoming contest.

I imagine I will still drink it all.
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Old 12-09-2012, 05:48 PM   #4
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150 and 152 are almost identical. 152 is kind of the turning point where things start to get sweeter, but at the hump around 151 there isn't much of a difference in fermentability.

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Old 12-09-2012, 06:08 PM   #5
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Quote:
Originally Posted by tochsner View Post
Yeah, it's a Black IPA. I figured it didn't matter at this point anyway.
Sixteen pounds of grain mashed into 4 gallons. I don't mind the extra alcohol and I tend to like my beer a little drier. I am concerned about it being watery. It was for an upcoming contest.

I imagine I will still drink it all.
If you have time, brew another batch where you mash at a better ratio (more than 1qt/#) and at the temperature you wanted. Then see how the two compare.
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Old 12-09-2012, 06:10 PM   #6
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If you have time, brew another batch where you mash at a better ratio (more than 1qt/#) and at the temperature you wanted. Then see how the two compare.
Good idea. I will go tell my wife I need to brew another batch today. Nothing can go wrong with that plan.
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Old 12-09-2012, 06:15 PM   #7
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Good idea. I will go tell my wife I need to brew another batch today. Nothing can go wrong with that plan.
Well, IF there's time, you could do it next weekend.

I can only imagine what some of you guys go through that need to 'justify' brewing to SO's...
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Old 12-09-2012, 06:18 PM   #8
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Quote:
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I can only imagine what some of you guys go through that need to 'justify' brewing to SO's...
You have no idea Golddiggie......
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Old 12-09-2012, 06:20 PM   #9
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You have no idea Golddiggie......
Poor bastards... I hope she makes up for it in other areas.
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跟猴子比丟屎 ・ Gun HOE-tze bee DIO-se

On Tap: Caramel Ale, Mocha Porter II, MO SMaSH IPA
Waiting/Carbonating: 12.5% Wee Honey II, 8.9% Old Ale, English Brown Ale, Lickah ESB, Mocha Porter II
Fermenting
K1:
K2: Epic mead
K3: TripSix
On Deck: Caramel Ale
Aging:mead
Mead [bottled]:Oaked Wildflower Traditional, Mocha Madness, Blackberry Melomel, maple wine
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