The brewers started by aging a high-gravity Seltzer in tequila barrels, where it picked up bold agave flavors along with a hint of oak. Then they amped it up with tropical waterfalls of passionfruit, orange, mango, and lime. A touch of agave syrup sweetens the tangy fruit cocktail, while a dollop of house-made pequin pepper tincture adds gently building spice.