- 0.75 oz Sweet vermouth or white vermouth
- 0.75 oz Floral Gin
- Lengthened with Tonic 1642 Elderflower tonic
- Slice of fresh grapefruit
- Pour the vermouth and gin into a glass filled with ice cubes.
- Lengthen with the elderberry tonic, then stir with a spoon.
- Garnish with a slice of fresh grapefruit