
1) Brewing residue 2) Lees 3) Refuse
Found on
https://www.crosswordclues.com/clue/draff

• (n.) A narrow border worked to a plane surface along the edge of a stone, or across its face, as a guide to the stone-cutter. • (n.) A selecting or detaching of soldiers from an army, or from any part of it, or from a military post; also from any district, or any company or collection of persons, or from the people at large; also, the b...
Found on
http://thinkexist.com/dictionary/meaning/draff/

The Scottish term for what is left of the used grain after fermentation. It is used for animal food.
Found on
http://www.encyclo.co.uk/local/21451
Draff (drȧf)
noun [ Confer Dutch
draf the sediment of ale, Icelandic
draf draff, husks. Confer 1st
Drab .] Refuse; lees; dregs; the wash given to swine or cows; hogwash; waste matter. « Prodigals lately come from swine keeping, from eating
draff and husks....
Found on
http://www.encyclo.co.uk/webster/D/117

A term originating from Scotland. Draff is a term for used cereal grains which are no longer useful in the production of alcohol. Rather, draff is used for livestock feed.
Found on
http://www.masterofmalt.com/whisky-glossary/

The organic residue left from the grains and cereals after the mashing that’s later dried and sold as animal feed.
Found on
https://uproxx.com/life/whiskey-101-guide-terms-to-know/

Also known as spent grains, this refers to the leftover grain in the mash tun after the sugars have been extracted. The draff from the distillery is never wasted and is in fact a useful co-product for our farming community, who collect and use as cattle feed.
Found on
https://www.bruichladdich.com/bruichladdich-whisky-news/making-whisky/gloss

In Scotland, what is left of the grain after fermentation. It is used for animal food.
Found on
https://www.encyclo.co.uk/local/21392

The spent grist left behind in the mash tun after the mashing process has been completed. Being high in protein it makes excellent cattle food, and is either sold off to farmers in its 'raw' state or converted into dark grains.
Found on
https://www.encyclo.co.uk/local/21396

dregs, as in a brewing process; lees; refuse.
Found on
https://www.infoplease.com/dictionary/draff

Mineral- and protein-rich spent grains which are used as animal feed.
Found on
https://www.whisky.com/information/knowledge/about-whisky/whisky-glossary.h
No exact match found.