A Grapefruit Jasmine Aperitif is a light, refreshing cocktail that’s perfect for a summertime aperitif. Lillet Rouge is a natural partner for grapefruit, and the bitters help to bring out similar citrus notes in the Lillet, while the gin and jasmine lend a light floral layer. While this drink is lovely as a stirred cocktail, you can also omit the gin and top it with sparkling wine for a bright, less boozy version.