I made this for a lovely, poolside lunch at my friend Kathleen's house. I had homemade peach sorbet, but you could certainly use a nice, store-bought sorbet.
For each float:
place 2-3 scoops of sorbet in a tall glass
Fill glass with cold Prosecco, Cava, or other sparkling wine.
Garnish with mint sprig, if desired.
Serve with a straw and ice tea spoon.