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Old 11-09-2013, 01:31 AM   #1
plankbr
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Question here. I am batch sparging in a 10 gallon rubbermaid converted cooler. I use Sparge Pal on the iPhone. To achieve a 156* mash temp, it's stating that I strike with 170* water. My question is: Will this kill the conversion??? The owner of the LHBS said that was way too hot to strike with. Lost here. Advice please?

Thanks


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Old 11-09-2013, 01:33 AM   #2
sudsmcgee
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Strike water doesn't matter in batch sparring if the resultant mash temp is correct. No worries!


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Old 11-09-2013, 01:45 AM   #3
jakenbacon
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Quote:
Originally Posted by plankbr View Post
Question here. I am batch sparging in a 10 gallon rubbermaid converted cooler. I use Sparge Pal on the iPhone. To achieve a 156* mash temp, it's stating that I strike with 170* water. My question is: Will this kill the conversion??? The owner of the LHBS said that was way too hot to strike with. Lost here. Advice please?

Thanks
Yes it will kill the conversion. That is why we sparge with such warm water. To rinse the sugars off the grains which are more soluble at higher temperatures, and to denature the enzymes to stop conversion. This helps 'set' the profile of the beer. If you rinsed with the same temp water as your mash, not only would you be getting worse efficiency, but the enzymes will still be active, so if you say, drain to your Bk and temps start to drop, the enzymes will continue conversion which could leave you with a wort that may be equivalent to something like a 148 degree mash..... Make sense

 
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Old 11-09-2013, 01:48 AM   #4
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Strike temp of 170 sounds just about right for a mash temp of 156. My strike temps usually end up about 12-14 degrees hotter than mash.
I routinely shoot a few degrees higher than that and then stir to bring it down to mash temps (easier than trying to add hot water and get it up to temperature)

Not gonna kill conversion because the grain will absorb all that heat immediately and the temps will come right down as well.

Advice: Make sure you preheat the cooler before with some hot (not boiling) water and then the cooler will not absorb a lot of that heat.
Also... STIR.... STIR...... STIR!!!!!!!! Mix it up well!

Hope this helps.
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Old 11-09-2013, 01:54 AM   #5
sudsmcgee
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Quote:
Originally Posted by jakenbacon View Post
Yes it will kill the conversion. That is why we sparge with such warm water. To rinse the sugars off the grains which are more soluble at higher temperatures, and to denature the enzymes to stop conversion. This helps 'set' the profile of the beer. If you rinsed with the same temp water as your mash, not only would you be getting worse efficiency, but the enzymes will still be active, so if you say, drain to your Bk and temps start to drop, the enzymes will continue conversion which could leave you with a wort that may be equivalent to something like a 148 degree mash..... Make sense
He's talking about mashing in, not sparging.
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Old 11-09-2013, 01:56 AM   #6
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Quote:
Originally Posted by sudsmcgee View Post
He's talking about mashing in, not sparring.
Yeah this^
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Old 11-09-2013, 01:59 AM   #7
jakenbacon
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Quote:
Originally Posted by sudsmcgee View Post
He's talking about mashing in, not sparging.
Quote:
Originally Posted by brewkinger View Post
Yeah this^
Whoops!!!

 
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Old 11-09-2013, 01:59 AM   #8
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I try to come in at 175' and cool down as necessary. The temperature of your grains and mash tun are going to pull you into range.
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Old 11-09-2013, 02:05 AM   #9
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I bet my strike water would kick your water's ass in a fight.
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Old 11-09-2013, 11:17 PM   #10
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Quote:
Originally Posted by masskrug View Post
I bet my strike water would kick your water's ass in a fight.
I know you weren't talking to me like that Florida boy....

Any day, any time....



 
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