- 1/4 lime
- Coarse salt for coating the rim of the glass
- 2 jiggers (3 ounces) tequila
- Chilled tonic water
- 2 thin lime slices
- Rub the rim of a highball glass with the 1/4 lime and dip it into a bowl of coarse salt to coat it lightly. Fill glass with ice and squeeze remaining juice from lime into it. Add tequila and stir. Fill with tonic and add lime slices.