3 oz tequila blanco 3 oz Cointreau 4 oz simple syrup, or to taste (1 c. water, 1 c. sugar, in a saucepan, bring to boil, dissolving sugar, cool to room temp) 8 oz fresh-squeezed lime juice, or to taste You can make the above ahead of time, and is best to, and chill. When ready to serve, fill glass halfway with margarita mixture, top off with with prosecco. Makes for a light, crisp, a little bubbly, and potent margarita. Depending on the glass size, makes 4-6 servings. I made a double batch last night, which was good for two bottles of prosecco. This is what I painted while under the influence of the above recipe. And it was upright when I started ...