The unique yeast that grows on top of the sherry protecting it from oxidation. When aged under flor, a wine is considered to be undergoing biological maturation. The flor yeast consuming oxygen, alcohol, and, volatile acidity, in turn the produce metabolites that add unique characters and textures to the wine. Each Bodega has a unique endemic flor, that as Jesús from Equipo Navazos would say, is one of the two sherry terroirs, the other the vineyard.
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