We like the clean flavor and mixability of silver tequila here. For a nonalcoholic drink, omit it and top with sparkling water.
Muddle together sugar and lemon rind in a large glass. Stir in cactus water, tequila, and honey. Add ice cubes; cover, and shake well. Strain tequila mixture evenly into 4 glasses. Top each serving with 1 tablespoon prosecco.
True Nopal Cactus Water: Unlike other brands, True Nopal has no added sugar, so you can taste the prickly pear--it's like mild grape juice, pleasant on its own, and a great mixer that won't step on other flavors. It has half the calories and sugar of many coconut waters. Available at grocery stores nationwide.