You need authentic Mexican grapefruit soda to make an authentic version of the tequila classic.
- 2 oz Partida blanco tequila
- 1 pinch Salt
- Half a lime
- Grapefruit soda
Fill a highball glass with ice and add the tequila and salt.
Squeeze the lime half into the glass and drop into the drink.
Fill with grapefruit soda.