Pre-heating mash tun - HomeBrewChatter.com Home Brew Forum

murl · 01-10-2010, 03:48 PM

So Do you really have to preheat the tun with a gallon of boiling water? It seems to me that it would make more sense to heat your strike water 5-10 degrees hotter than you calculate, pour it in, allow it to cool to your strike temp then start stirring in your grains. Is there anything wrong with this?

Joos · 01-10-2010, 03:50 PM

Thats what I do. A gallon wouldnt do much to my MLT.

rdwj · 01-10-2010, 03:52 PM

You don't HAVE to pre-heat at all, but it makes it easier to meet your target temps. I don't use boiling water - just the hottest water I can get off the tap.

PseudoChef · 01-10-2010, 03:53 PM

Quote:

Originally Posted by murl

So Do you really have to preheat the tun with a gallon of boiling water? It seems to me that it would make more sense to heat your strike water 5-10 degrees hotter than you calculate, pour it in, allow it to cool to your strike temp then start stirring in your grains. Is there anything wrong with this?

I do this same thing.

karmabrew · 01-10-2010, 03:57 PM

Quote:

Originally Posted by PseudoChef

I do this same thing.

I do this as well!

salad 419 · 01-10-2010, 04:06 PM

Quote:

Originally Posted by karmabrew

I do this as well!

I don't know what I do, but I wanted to use the knights.

murl · 01-10-2010, 04:25 PM

I suppose you could calculate the specific heat of he tun but that seems like to much work. It just seems like you could be really accurate by letting the tun absorb the heat and warm up open the lid and let it lower to the strike temp and you should be right on the money.

Barley-Davidson · 01-10-2010, 04:32 PM

On beersmith I enter the temp of the MLT and the grain and it compensates, so I've never preheated my mash tun.

Joos · 01-10-2010, 04:35 PM

Quote:

Originally Posted by murl

I suppose you could calculate the specific heat of he tun but that seems like to much work. It just seems like you could be really accurate by letting the tun absorb the heat and warm up open the lid and let it lower to the strike temp and you should be right on the money.

Yup. Keep it simple man. Thats the best part about this hobby. Theres no 1 way to do anything. Take whatever you read as guidance, and find out whatever works best for you and your system.

sonex · 01-10-2010, 05:37 PM

what ever works for you, they all work. I use my 140f hot tap water to preheat the tun. then pour it out right before pouring in my strke water. no right or wrong way.

01-10-2010, 03:48 PM	#1
murl Senior Member Join Date: Oct 2009 Posts: 533	Pre-heating mash tun So Do you really have to preheat the tun with a gallon of boiling water? It seems to me that it would make more sense to heat your strike water 5-10 degrees hotter than you calculate, pour it in, allow it to cool to your strike temp then start stirring in your grains. Is there anything wrong with this?

01-10-2010, 04:32 PM	#8
Barley-Davidson Brewmaster of Puppets Join Date: Feb 2008 Location: Landing, NJ Posts: 2,971	On beersmith I enter the temp of the MLT and the grain and it compensates, so I've never preheated my mash tun. __________________ "When we are no longer able to change a situation, we are challenged to change ourselves" NJHOPZ - North Jersey Homebrewers Organization of Practicing Zymurgists Get Seven-Deuce Gear!

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

01-10-2010, 03:52 PM	#3
rdwj I'm totally cereal! Join Date: Feb 2008 Location: Chicago, IL Posts: 725	You don't HAVE to pre-heat at all, but it makes it easier to meet your target temps. I don't use boiling water - just the hottest water I can get off the tap.

01-10-2010, 04:25 PM	#7
murl Senior Member Join Date: Oct 2009 Posts: 533	I suppose you could calculate the specific heat of he tun but that seems like to much work. It just seems like you could be really accurate by letting the tun absorb the heat and warm up open the lid and let it lower to the strike temp and you should be right on the money.

01-10-2010, 05:37 PM	#10
sonex Member Join Date: Nov 2009 Location: south central Pa Posts: 81	what ever works for you, they all work. I use my 140f hot tap water to preheat the tun. then pour it out right before pouring in my strke water. no right or wrong way.