Makes 1 serving Combine the cognac, brandy, simple syrup, and egg white in a cocktail shaker (do not add any ice), and shake until foamy. Add ice to the shaker and shake again until well-chilled. Strain into a chilled coupe glass and garnish with nutmeg.
Makes 1 serving Fill a cocktail shaker with ice and add the bourbon, ginger beer, simple syrup, lemon juice, and blueberry purée. Shake until well-chilled, then strain into a rocks glass. Garnish with blueberries.