Whatever the occasion, toast your guests with this fresh, fruity cocktail. Be sure to buy mangoes that have a pleasant, sweet aroma. For the bubbles, choose a not-too-sweet sparkling wine, such as a French cremant de Bourgogne or an Italian prosecco. For a nonalcoholic cocktail, mix with ginger ale or soda water.
Make Ahead Tip: The mango puree will keep, covered, in the refrigerator for up to 8 hours.
Tip: To prepare a mango: Slice off one side, sliding the knife along the flat seed. Repeat on the other side. Make crisscross cuts through the flesh, up to but not through the skin. Press so the cut side pops outward, then slice off cubes.