Strong, boozy, and perfectly balanced, this is the cocktail that started Proof Syrup. 

Mix this classic spirit-forward cocktail using any syrup from our Old Fashioned collection: Traditional, Black Walnut, Maple Bacon, Orange, Pecan, or Pumpkin Spice. Make it your own by using your favorite aged spirit,  including bourbon, rye, or any other whiskey, of course, but also aged rum, tequila, or mezcal.

A quick note as to method: We strongly recommend measuring both spirit and syrup, at least at first — a half-ounce is a lot less than most folks think it is, and about the worst thing you can do to an Old Fashioned is make it too sweet. You can always add more, but you can't take it back, so start with one part Proof Syrup to four parts spirit, stir, sip, and adjust as your taste buds dictate. 


  • 2 oz Your Favorite Aged Spirit
  • ½ oz Proof Syrup
  • Orange Peel to Garnish



  • Jigger
  • Mixing Glass
  • Bar Spoon
  • Strainer
  • Rocks Glass



  1. Measure Proof Syrup and spirit into mixing glass; add ice and stir to combine.
  2. Strain into an ice-filled rocks glass.
  3. Garnish with orange peel.


Variations: If using Maple Bacon Proof Syrup, garnish with a crisp slice of bacon. If using Pumpkin Spice Proof Syrup, garnish with a cinnamon stick.