Mash Temp? - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Mash Temp?

Thread Tools
Old 06-09-2010, 04:52 PM   #1
Apr 2010
San Diego
Posts: 7

I have only been brewing a short time with extracts and am no venturing into partial mash and all grain brewing. My question is, how do I determine what my mash temperature should be? I have seen lots of recipes where a specific temp is listed, but have been unable to find anything that really explains how to determine what my temp should be.

Thanks in advance,

Reply With Quote
Old 06-09-2010, 05:00 PM   #2
Dec 2009
Posts: 127

You want to mash at a temp that will convert the starches to fermentable sugars, the temps that this happens at are roughly 150 - 160. You can get very deep into the chemestry of this if you like, detailing the beta and alpha amylase (one is highly fermentable and the other less so) but a good mix of the two make good beer.

Reply With Quote
Old 06-09-2010, 05:11 PM   #3
Oct 2009
Katy, TX
Posts: 116
Liked 1 Times on 1 Posts

From a previous post on this topic: what erkwist has said is correct. 153 F is a compromise to get good activity from the malt enzymes beta amylase and alpha amylase; shoot for that temp and you can't go wrong. This is especially true for your first few batches until you get your system dialed in. Once it's dialed in, you can play w/ your mash temp to tweak the beer: lower mash temps will result in a thinner, drier beer; higher mash temps will result in a sweeter/maltier beer. Here's a good, concise summary on mashing:

Assuming you will be batch sparging for now, just remember that to hit 153, the water you add to the mash tun will have to be hotter than that to account for thermal absorption of the grain and the tun itself, you'll also be stirring the water into the mash and will lose a degree or two to the air. There is software and online tools to help you calculate your stike water temperature. Here are two:


Reply With Quote
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Maibock mash temp question (Partial mash) motobrewer All Grain & Partial Mash Brewing 6 01-14-2015 01:51 AM
Keeping Mash temp during 90min Mash in 5gal Cooler MLT KYB All Grain & Partial Mash Brewing 13 01-30-2013 05:57 AM
Temp. Step Mash w/Igloo Mash Tun Netflyer All Grain & Partial Mash Brewing 4 03-18-2010 12:35 AM
Partial mash: mash temp too high - what to do? kcpup Beginners Beer Brewing Forum 6 10-18-2009 11:54 PM
Mash Temp Versus Mash Time mew General Techniques 8 07-16-2008 07:28 PM

Forum Jump