Combine the gin, agave, bitters and lemon juice in a cocktail shaker filled with ice and shake. Rub the mint leaves on the inside of a wine glass, and then fill the glass with ice. Strain into a glass and top with the Prosecco.
NotesThis recipe was provided by a chef, restaurant or culinary professional and may have been scaled down from a bulk recipe. The Food Network Kitchens chefs have not tested this recipe, in the proportions indicated, and therefore, we cannot make any representation as to the results.