sour mash

noun

a blended grain mash used in the distilling of some whiskeys, consisting of new mash and a portion of mash from a preceding run and yielding a high rate of lactic acid.

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Origin of sour mash

An Americanism dating back to 1880–85

Words nearby sour mash

sour cream, sour dock, sour gourd, sour grapes, sour gum, sour mash, sour on, sour orange, sour salt, sour-milk cheese, sourball
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for sour mash

sour mash

noun US

a grain mash for use in distilling certain whiskeys, consisting of a mixture of new and old mash
any whiskey distilled from such a mash
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012