3 lb. round steak, 2 inches thick
1 c. ketchup
1/2 c. water
1/4 c. soy sauce
2 tbsp. vinegar
1 tbsp. brown sugar
1 tsp. mustard
1 tsp. horseradish
1 clove garlic

Combine the last 8 ingredients in saucepan. Simmer 10-15 minutes.

Prepare steak: moisten steak with water. Sprinkle with meat tenderizer 1 1/2 teaspoons). Pierce with fork several times, both sides. Tenderize overnight or several hours before. Heat up grill. Throw on steak and baste with BBQ sauce several times until steak is done.