Ask Mr. Wizard

More Mash Space


Marty Coatney • Lebanon, Oregon asks,

I’m looking at increasing the size/brewing capacity of my homebrewery. Right now I am using two 5-gallon (19-L) beverage coolers and they limit me to around 13 to 14 pounds (5.8-6.4 kg) of grain if I mash at a 1.25 qts/lb. ratio. When I upgrade, I want to be able to do bigger beers. How do I determine the grain capacity of any given mash tun of a certain volume?

Sizing brewing vessels is part of my job with the Paul Mueller Company. When I am sizing mash mixers for brewing applications where the mash is conducted in a stirred and heated
Response by Ashton Lewis.