Vampire Blues

Ingredients
  • 1 1⁄2 oz Bourbon, Old Weller Antique 107
  • 1⁄2 oz Sherry, Lustau East India Solera
  • 1⁄2 oz Lemon juice
  • 1⁄2 oz Simple syrup
  • 1 t Pumpkin butter
  • 2 ds Bitters, Angostura
  • 1   Cinnamon stick (as garnish)