Dictionary

brewers' spent grains en · NOUN

(plural, plural-only) A byproduct from brewing that is comparable to the distillers' grains from distilling and can be put to some of the same uses, such as animal feed supplementation; it comprises what is left of the malted grains after the fermentation, which includes much cellulose, lignin, other fiber, and proteins.
- Near-synonym: draff (sometimes synonymous)

Spelling	Labels	Source
brewers spent grain	alternative	lexicographic
brewer's spent grain	alternative	lexicographic
brewers' spent grain	alternative	lexicographic
brewer's spent grains	alternative	lexicographic
brewers spent grains	alternative	lexicographic