1.5 oz Nine Banded Whiskey
.5 oz Lemon Juice
.5 oz Grapefruit Juice
.75 Simple Syrup
2-3 Dashes Salud! Citrus Bitters
Top with Topo Chico, Garnish with Grapefruit Wheel

Add whiskey, citrus, simple, and bitters into a shaker with ice. Shake vigorously for 15-20 seconds. Strain into Collins glass, add fresh ice, and top with Topo Chico. Garnish with a lemon wheel.