The quality or state of being beery; the condition of smelling like beer, being full of beer, or showing the effects of beer drinking.
Abstract noun derived from 'beery' plus the noun-forming suffix -ness. This suffix converts the adjective into a countable abstract quality that can be discussed independently.
The 'beeriness' of a place—that combination of stale hops, yeast, sweat, and alcohol—became such a distinctive smell in medieval Europe that it literally defined what a tavern smelled like, a smell modern brewpubs try to recreate.
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