2 oz tequila blanco
1/2 oz fresh lime juice
Pinch of salt
3 to 4 oz grapefruit soda or grapefruit juice
Ice
Lime wedge or grapefruit slice for garnish
Fill a glass with ice
Add tequila, lime juice, and salt
Top with grapefruit soda or grapefruit juice
Stir gently
Garnish with lime wedge or grapefruit slice