Flor

Flor – A low yeast level.
Flor is a layer of yeast of a few centimeters thick, which floats on the sherry.
It’s a spontaneous natural phenomena which appears in the sherry region and several other locations in the world, including the Jura.
Flor seals off the sherry in the barrel, as a result of which no oxygen can reach the sherry.
These sherries are called Fino or Mazanilla. They are always very thin of structure en very pale of colour.

An Amontillada is a sherry which had flor at first, but later still oxidized.
For more information: www.vinosdejerez.nl