Flaky sea salt, such as Maldon
1 bottle (750 ml) silver tequila, chilled
48 ounces (6 cups) sparkling water, preferably Topo Chico, chilled
Run a lime wedge around rim of each serving glass; dip in salt and pepper flakes. Fill glasses with ice. Pour 1 1/2 to 2 ounces tequila into each, top with sparkling water, and serve each with a lime wedge.