For Each Cocktail:
-2 oz mezcal, such as Noble Coyote Espadín
-4 oz Jarritos Grapefruit Soda (Toronja)
-2 oz fresh grapefruit juice
-juice of one quarter of a lime
-Garnish: grapefruit slice and Noble Coyote Sal de Gusano
Combine all ingredients then strain and serve in rocks glass. Fill glass with ice cubes and top with soda.