Whiskey Sauce Recipe Steak

Steak sauce recipe calls for 1 teaspoon of whiskey?
Do you think that would make any difference if I did not add? The sauce simmer for 40 minutes so you probably get cooked anyway right? I can not find any of these "air cylinders, so I'd have to buy a bottle great just to use one teaspoon: /
Yes you be well, and you can add white vinegar instead.
Steak and Onions Recipe by the BBQ Pit Boys