Rachel’s Vodka-Soda: 2 oz HDC Ruby Red Grapefruit Vodka (or choose your favorite HDC Flavored Vodka) 4 oz club soda Lime wedge or fresh fruit Drink of choice for Rachel Belle, KIRO 97.3 FM. This classic drink is super simple and best when served very cold. Pack a high-ball glass with ice cubes. Add your HDC Flavored Vodka of choice (best when chilled) and club soda. The proportions depend on taste, anywhere from 1:1 vodka to club soda to one part vodka, three parts soda. Garnish with a citrus slice.