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Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Mashing out with a mash tun?
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Old 12-28-2012, 08:31 PM   #1
Britinusa
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Default Mashing out with a mash tun?

I ma just making my second brew and I am using my Rubbermaid mash tun for the first time, how do i perform the mash out step where I increase the temp to 170f? do i do this by adding hot water before i do the initial drain of the wort?

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Old 12-28-2012, 08:38 PM   #2
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Are you batch sparging or Fly sparging?

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Old 12-28-2012, 08:48 PM   #3
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Batch sparging

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Old 12-28-2012, 09:09 PM   #4
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Your second addition of water should be 170 degrees, that is your mashout.

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Old 12-28-2012, 09:10 PM   #5
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Cool, that's what I was hoping, thanks for the help.

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Old 12-28-2012, 10:05 PM   #6
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you have to take into account your mash temp. if you are mashing 10 lbs of grain (1.5 quarts per pound) at 152 and you add want to mash out at 170 you have to add 7.3 quarts of boiling water. if you add 170 degree water it will not reach your mash out temp of 170.

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Old 12-28-2012, 10:11 PM   #7
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OK i didnt do that, What does the mash out higher temp achieve?

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Old 12-28-2012, 10:34 PM   #8
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if you didn't actually mash out it's fine, many people skip the mash out. mashing out (170 degrees or so) stops the enzyme reactions and locks in the fermentable sugar profile.

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Old 12-29-2012, 12:08 AM   #9
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Ah ok, thanks for that.

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Old 12-29-2012, 07:55 PM   #10
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Quote:
Originally Posted by Monster Mash View Post
Your second addition of water should be 170 degrees, that is your mashout.
If your sparge water is 170, your grain bed will never hit 170. I use water about 190F for batch sparging, which gets me close to a 170 grain bed. But for a true mashout, you need to hold the 170+ temp for at least 20 min. Most homebrewers don't do that, and for batch sparging a mashout it really unnecessary.
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