Hazelnut Bourbon Sour recipe Author: Marlynn Schotland | UrbanBlissLife.com Prep time: 5 mins Total time: 5 mins Ingredients 2 ounces Frangelico hazelnut liqueur 1 ounce Bourbon ½ ounce simple sugar (equal parts sugar and water, combined) 4-5 drops of aromatic bitters squeeze of lemon juice Instructions Pour all ingredients over ice in a glass. Stir