120ml | Heineken Lager Beer, chilled |
90ml | Grapefruit juice or soda, chilled* |
Rosemary sprig, for garnish |
*Both grapefruit juice and grapefruit soda are acceptable. However, sodas have added sugars. If your grapefruit juice is sour, consider adding 15 ml of simple syrup (one part water to one part sugar).