Brewers' spent grain, silage

The solid residue left after the processing of germinated and dried cereal grains (malt) for the production of beer and other malt products (malt extracts and malt vinegar), ensiled. Rich in protein and fibre, it's typically used as animal feed.

Also known as: Ensiled spent grains; Ensiled brewers grain; BSG; Brewery waste; Beer waste; Draff