Grapefruit Highball December 7, 2024January 2, 2025 Frank 3 oz grapefruit juice 1 oz grenadine club soda or ginger ale Put ice in tall tumbler with grapefruit juice and grenadine. Fill up with club soda or ginger ale. Stir and serve with a straw. This may also be served in a hollowed out grapefruit half. Post Views: 58