solera

noun
so·​le·​ra | \ sōˈlerə\
plural -s

Definition of solera

1 : a set of Spanish sherry vats arranged in tiers usually three high in a storage shed
2 or less commonly solera system : a system evolved by the sherry producers of Jeres, Spain, whereby young wine in the vats of the top tier of a solera is successively blended into the more mature wine in the vats on the tier below to insure ultimate uniformity
3 or less commonly solera sherry or solera wine : a wine aged by the Spanish solera system

History and Etymology for solera

Spanish, crossbeam, stone base, mother liquor, from suelo ground, floor, dregs, from Latin solum ground, base

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