Heat the butter in a saucepan over medium heat.

Add the onion and garlic and saute for two or three minutes until an aroma is apparent.

Add the chili powder and jalapenos.

Sauté the mixture for another 30 to 45 seconds.

Add the coffee, Worcestershire Sauce, tomato paste, vinegar, brown sugar, and cider.

Simmer for 20 minutes, adding stock if needed, until it is somewhat thickened.

Keep warm until needed.