Superlative form of draffy; the most like draff in quality—containing the most waste or most resembling worthless dregs.
From 'draffy' plus the superlative suffix '-est.' Represents the extreme degree of something being draff-like or resembling waste.
This word perfectly captures the medieval brewer's way of ranking quality: the 'draffiest' batch was essentially undrinkable sludge, making it a colorfully dismissive term for the worst of the worst.
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