What specific liqueur is combined with white wine to create the traditional aperitif known as Kir Lyonnais?

Answer

Crème de cassis (blackcurrant liqueur)

The Kir Lyonnais is a customary pre-meal beverage enjoyed in Lyon, rooted in the classic French aperitif formula but localized to specific regional ingredients. The essential component that gives the drink its distinct flavor and color is *crème de cassis*, which is a liqueur made from blackcurrants. This liqueur is mixed with white wine. While the standard French preparation often uses Bourgogne Aligoté, local tradition in Lyon sometimes favors substituting this with a local white wine. Another traditional aperitif mentioned is Guignolet, which is based on cherry liqueur.

What specific liqueur is combined with white wine to create the traditional aperitif known as Kir Lyonnais?
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