Which of the following wines is served well chilled at 6-8ᵒC?

Fino Sherry is best served chilled at a temperature range of 6-8°C. This lower serving temperature enhances its crispness and emphasizes its refreshing qualities. Fino Sherry, being a type of fortified wine, has a dry and light character that benefits from the cold, as it makes the flavors more vibrant and enjoyable. The chilling also complements the nutty and saline notes often found in Fino, making it a delightful choice, especially as an aperitif.

In contrast, other wines listed have different ideal serving temperatures. For example, Champagne is typically served slightly warmer, around 8-10°C, to allow for the release of its complex aromas and flavors. Pinot Grigio is best enjoyed at a slightly higher range of 8-12°C, where its fruitiness can be fully appreciated. Beaujolais, being a light-bodied red wine, is typically served around 12-14°C to showcase its juicy, fruity characteristics. Thus, Fino Sherry is the most compatible choice for the specified chilling range.