Adding an egg white to this cocktail helps mellow the bitter elements of the drink and adds a silky foam top. If you don't want to ingest raw egg whites, you can substitute with ¾ ounce of aquafaba. Aquafaba is the liquid from a can of chickpeas. It is a vegan alternative for making foams.
Combine bourbon, cider and lemon juice in an ice filled cocktail shaker. Shake vigorously for 30 seconds.
This banana bread tasted even better on the second or third day. Keep loosely wrapped in plastic. To serve, toast slices and spread with butter.