In this bright and elegant gin drink, freshly squeezed grapefruit juice complements Lillet Blanc's citrus tones, while botanical gin brings out the classic French aperitif's herbal notes. In addition to oranges and white wine, Lillet also includes quinine, a potent bittering agent that lends its astringent flavor to tonic water. A splash of sweet and floral elderflower liqueur serves as a graceful foil, resulting in a French Blonde cocktail that's harmonious and chic, with a lovely pale yellow hue that's just the thing for brightening up a cold night.