Prepare the glassware by rimming with maple syrup and cinnamon sugar. Transfer glass to the freezer to chill.
For Maple Whiskey Sour with Egg Whites or Aquafaba
If using aquafaba or egg white, add it and the bourbon/whiskey to a cocktail shaker. (If not using, SKIP THIS STEP)Vigorously shake for 15-20 seconds.Add other cocktail ingredients to the container and shake for another 10 seconds, until frothy.Strain drink into the chilled glass. If more foam is desired, stir with a latte whisk for 10-15 seconds.
For Maple Whiskey Sour without Egg
Measure all cocktail ingredients into a cocktail shaker. Add ice and shake for 10-12 seconds.
Strain into the chilled coupe glass.
Keyword fall cocktails, maple whiskey sour, Whiskey Sour