Sandia en Fuego

  1. 1 ½ oz reposado tequila
  2. ¾ oz lime juice
  3. ¾ oz agave nectar
  4. 1 cup watermelon chunks
  5. 2 serrano pepper slices

Muddle pepper slices in shaker, then muddle watermelon chunks on top. Add ingredients, shake with ice, and strain into a chilled rocks glass rimmed with black rock salt.