Ingredients

2 oz blanco or reposado tequila

6 oz fresh grapefruit soda (like Fresca or Squirt)

1/2 oz lime juice

Salt for rimming (optional)

Note: a mix of grapefruit juice and a splash of soda may be used if grapefruit soda is not available

Preparation

Rim a collins glass with salt. Fill the glass with ice and add the tequila and lime juice. Top it off with grapefruit soda.