This is my daddy's BBQ sauce recipe (Virginia/North Carolina-style). It's great for pork ribs or chicken cooked on the grill.
2 cups apple cider vinegar
6 tablespoons brown sugar
4 tsp crushed red pepper flakes
2 sticks cinnamon (crushed)
1 stick butter (or margarine)
3 tsp Lea & Perrins
Ground black and white pepper to taste
Heat all to blend. Slap it on that food the last 30 or so minutes on the grill and enjoy!