• 18 fl.oz. (500 ml.) pink grapefruit juice
• 5 fl.oz. (150 ml.) water
• 3½ fl.oz. (100 ml.) gin
• 5 oz. (150 g.) sugar

Bring the water and sugar to the boil, and cook for 3 minutes. Allow to cool. When cold add the grapefruit juice and gin.

Place into an ice cream machine or deep freeze. If using a deep freeze, remove from time to time and stir.