Final answer:
The two white grapes used in Fino Sherry are Palomino, the primary grape, and occasionally Pedro Ximénez. Palomino provides a neutral flavor ideal for Fino's light and dry style, while Pedro Ximénez can add a hint of sweetness.
Step-by-step explanation:
The two white grapes that are most commonly used in the production of Fino Sherry are Palomino and Pedro Ximénez. Fino Sherry is a dry variety of Sherry that originates from the Andalusia region in Southern Spain, specifically in the area of Jerez. Palomino is the primary grape used, accounting for the majority of the blend due to its neutral profile, which is ideal for making the light and dry style of Fino Sherry. Pedro Ximénez, though less common for Fino, is sometimes blended to add a touch of sweetness or used in other types of Sherry. The winemaking process for Fino includes fortification and aging under a layer of yeast known as 'flor' that lends Fino its characteristic crisp and nutty flavor.