Step 1.
- Fill a Collins glass with ice.
Step 2.
- In a shaker, combine 2 oz vodka, 1 oz fresh grapefruit juice, and 0.5 oz simple syrup.
Step 3.
- Shake well to mix the ingredients thoroughly.
Step 4.
- Strain the mixture into the prepared glass filled with ice.
Step 5.
- Top with soda water to fill the glass.
Step 6.
- Garnish with a slice of grapefruit and a cherry.