Jen isn't a huge fan of amaretto sours. So, we went on a quest to find a recipe she'd love. The winner was this grown-up version by Jeffrey Morgenthaler, bar manager of Pépé Le Moko and Clyde Common in Portland, Oregon. The recipe was featured in the New York Times as one of the best cocktail revamps, and they weren't wrong. Aged bourbon whiskey and frothy egg whites provide a modern twist on a classic drink.