Mango Mint Sparklers

Crush mint leaves with lime juice in a bowl with a pestle or wooden spoon until bruised and beginning to break up. Stir in mango nectar, then chill, covered, at least 1 hour.

Pour mango mixture through a sieve into a large glass measure, discarding solids, then pour about 1/2 cup mango mixture into each of 6 (10-ounce) glasses and top off with Moscato d'Asti (or sparkling water).