A delicious recipe for Aperol Sour, with Aperol® orange liqueur, lemon juice, sugar syrup and orange bitters. Also lists similar drink recipes. Ingredients:1 3/4 oz Aperol® orange liqueur3/4 oz lemon juice1/4 oz sugar syrup1 dash orange bitters Method:Shake well over ice in a shaker. Strain into a sour glass, and