(especially in Spain) a series of casks, graded according to age, in which sherries and brandies are stored while maturing.
a classification for the sherries or brandies having the greatest maturity in a solera.
Origin of solera
< Spanish: literally, supporting beam, base (for uprights) < Vulgar Latin*solāria, equivalent to Latinsol(um) base, ground (> Spanishsuelo) + -āria-ary; Cf. vino de solera mature wine (presumably from the bottom range of casks) used to fortify younger wine