0.5 oz Grapefruit Syrup
1.5 oz Texas Single Malt Whisky
1 oz Grapefruit Juice
2 Dashes of Bitters
Garnish: Grapefruit Rind Twist
Combine Texas Single Malt Whisky, grapefruit syrup, grapefruit juice, and bitters to a shaker filled with ice. Shake and empty into a Rocks or Collins glass. Top with Topo Chico and garnish with a grapefruit rind twist.