Comparative form of draffy; more like draff in appearance, quality, or composition—containing more waste or resembling dregs.
From 'draffy' plus the comparative suffix '-er.' 'Draffy' comes from 'draff' (the dregs), with '-y' added to make an adjective.
English speakers would use 'draffier' to describe increasingly poor-quality grain or a more worthless mixture, a colorful way to express gradual degradation that shows up in historical brewing records.
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