Whisk eggs and lime peel together in a large bowl until light and fluffy. Stir in evaporated milk and condensed milk to taste. Add rum, bitters, and nutmeg. Remove lime peel and serve over crushed ice.
This recipe contains raw eggs. We recommend that pregnant women, young children, the elderly, and the infirm do not consume raw eggs. Learn more about egg safety from our article, Making Your Eggs Safe.