Use homemade PSL syrup for best flavor (link to your Pumpkin Spice Latte Syrup post).
Make a big batch of syrup and store it in mason jars for up to 2 weeks.
The old fashioned works beautifully with rye whiskey if you want a spicier profile.
Keyword fall cocktail recipes, old fashioned, PSL recipes, pumpkin spice cocktails