In the production of Fino Sherry, what is the name of the yeast that helps protect the wine from oxygen?

In the production of Fino Sherry, the yeast referred to is Flor. Flor is a specific type of surface yeast that forms a protective layer on the wine while it is aging in barrels. This yeast layer plays a crucial role in the development of Fino Sherry by preventing excessive exposure to oxygen, which can lead to oxidation and spoilage. The presence of Flor contributes to the unique characteristics of Fino, giving it a distinctive flavor profile that includes notes of almonds and green apples, alongside a fresher, lighter style.

Flor yeast also allows for biological aging, which is essential for Fino Sherry, as it helps to retain the wine's freshness and enhances its complexity. The controlled environment in which Flor thrives is a key aspect of Sherry production, making it a vital component in the creation of this unique fortified wine.