Step 1.
- Prepare a shot glass by rubbing the rim with lime juice and dipping it into sour sugar to coat.
Step 2.
- In a shaker filled with ice, combine vodka, lemon juice, and grenadine.
Step 3.
- Shake well for about 15 seconds until chilled.
Step 4.
- Strain the mixture into the prepared shot glass.
Step 5.
- Serve immediately and enjoy!