3 tbsp honey 1 1/2 cups lime juice 1 cup sugar 6 cups ruby-red grapefruit juice
Place 3 tbsp honey in a microwave-safe bowl and micro until warm. Combine 1 1/2 cups lime juice, 1 cup sugar and warm honey in a pitcher.
Stir to dissolve sugar. Stir in 6 cups ruby-red grapefruit juice. Refrigerate until chilled. Serve over ice