Sweet and Tangy Barbeque Sauce

Why I Love This Recipe
I was given this recipe over in the cooking community on LiveJournal. Don't be intimidated by the long list of ingredients... most of these can be found in a well-stocked kitchen. This recipe is simple to put together and so delicious that you'll never go back to store-bought sauces again. Recipe yields 1 quart of sauce.
Ingredients You'll Need
4 Tbsp olive oil
2 medium onions, chopped
2 cloves garlic, chopped
1 ½ cups ketchup
½ cup worcestershire sauce
½ cup soy sauce
½ cup beer
1 cup brown sugar
4 Tbsp maple syrup
4 Tbsp cider vinegar
½ tsp salt
1 Tbsp red chili power
½ tsp cayenne pepper
½ tsp tabasco sauce
¼ tsp dry mustard