How to Make a Sour Mash

pH plays a role in every step of the brewing process — from the time you mash in, all the way through to the final beer that fills the glass. Take a closer look at pH throughout the brewing process.

As any all-grain brewer knows, a mash is a mixture of hot water and grain. A “sour mash” is a mash that has acid-producing bacteria in it. Most people associate the term