6 tbsp. soy sauce
2 tbsp. vinegar
1/2 tsp. sugar
2 minced garlic buds
6 tbsp. ketchup
1/2 c. cooking oil
1/2 tsp. black pepper
6 lb. roast

Combine all ingredients for sauce. Marinate your roast 8 to 12 hours (blade, chuck, or round). Cook over charcoal for 1 hour, basting roast during cooking. Sear both sides first.