Muddle 3 Jalapeño Slices in a cocktail shaker
Fill shaker with ice
Add Tequila, Orange liqueur, Cilantro-lime juice, Agave Syrup (saline if desired) and shake till well chilled
If desired, rim rocks or margarita glass with salt
Strain cocktail into the rocks glass filled with ice
Garnish cocktail lime wedge and/or cilantro