How to Make It
Place tequila and jalapeño in a small bowl or cup. Let stand 1 hour. Strain mixture through a fine-mesh sieve over a cup; discard solids.
Blend cucumber, orange juice, lime juice, agave nectar, and salt until smooth. Strain mixture into a pitcher; discard solids. Stir in tequila.
Divide mixture among 4 ice-filled glasses. Garnish with fresh mint, if desired.