1 (5 oz.) bottle soy sauce
1/2 c. red wine vinegar
1 tbsp. brown sugar
2 tbsp. lemon juice
Dash of garlic powder
Dash of onion powder
1 (3 lb.) boneless rump or chuck roast

Combine all ingredients except roast; mix well. Place roast in a shallow dish, pour marinade over roast. Cover. Marinate 24 hours in refrigerator, turning once. Bake roast in marinade at 350 degrees for 2 hours. Remove roast to serving platter and serve with pan drippings. Yield 6-8 servings.