2 toasted hamburger buns
1/2 an onion, chopped
2 Tbsp. vinegar
1/4 c. water
1/4 tsp. salt
dash cayenne pepper
1 Tbsp. Worcestershire sauce
1 Tbsp. brown sugar
1/2 Tbsp. prepared mustard
black pepper, as much as you like
1/4 c. ketchup
Saute onion in butter, about 5 minutes. Add all of the sauce ingredients to the pan. Simmer about 20 minutes.
Place cooked burgers in the pan with the sauce; reduce heat as low as it will go. Cover and let steep for about 10 minutes.
Place meat on a bun and put a spoonful of extra sauce on top. Add cheese if you like (I did!). Recipe is easily doubled or tripled if you want to make more hamburgers. Delightful sauce. I meant to add a picture of the final burger, but... I forgot and ate it. =) Maybe next time because I will definitely be making this sauce again.
Original recipe courtesy of Charlaine Harris