2 oz Tequila Reposado

1 oz Grapefruit Juice

.5 oz Lime Juice

1 tsp Agave Syrup

4 oz Topo Chico

pinch of salt

Add all ingredients, including salt, directly into a double rocks, collins, or pilsner glass, fill with ice and stir. Garnish with mint, lime wheel and pineapple chunk.