Ingredients

• 3 cups fresh grapefruit juice (from about 4 large grapefruits), strained and chilled
• 1 1/2 cups sugar
• 1/2 cup Campari, chilled

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Instructions

1. In a blender, combine the grapefruit juice and sugar, and blend until the sugar is dissolved. Add the Campari, pour the mixture into the container of an ice cream machine, and churn according to the manufacturer's instructions. Transfer to an airtight container and freeze for at least 2 hours before serving.