Watermelon Aperol Spritz (Perfect Summer Aperitif Cocktail) Recipe 30ml Aperol50ml fresh watermelon juice “blended”10 ml Rosemary syrup60 ml sparkling wine – Prosecco better80ml Fever Tree Premium Indian tonic water Related posts: Prosecco Beet Rose Watermelon & Basil Smash Toddy Powered by YARPP.