Grapefruit with crème de menthe

Prepare 4 grapefruits as above, turning segments into a bowl. Add 2oz (50g) castor sugar and chill for several hours. Then stir in 2 tablespoons creme de menthe and grapefruit will take the pretty green colour. Chilling the grapefruit emphasizes the cool taste of the liqueur. Serve in individual serving glasses, with sugared rims.