Which style of Sherry is known for having a flor layer during aging?

The style of Sherry that is known for having a flor layer during aging is Manzanilla. This is a specific type of Fino that is produced in the coastal town of Sanlúcar de Barrameda.

Flor is a natural yeast that forms a protective layer on the surface of the wine during the aging process in barrels. This layer helps to prevent oxidation while allowing the development of unique flavors and characteristics associated with the wine. Manzanilla, due to its location near the sea and the specific microclimate of Sanlúcar, typically develops a more pronounced flor layer. This results in a fresh, light, and briny character that is distinctive to this style of Sherry.

In contrast, Oloroso Sherry does not develop flor and is aged in a way that promotes oxidation, leading to richer, nuttier flavors. Amontillado starts with a period of flor aging before being exposed to oxygen, resulting in a complex profile but is not defined solely by flor. Pedro Ximénez is a sweet style made from sun-dried grapes and does not involve flor aging, focusing instead on the sweetness and concentration of the fruit.