1/2 c. red wine vinegar
1/4 c. soy sauce
2 tbsp. oil
2 tsp. minced onion
1-2 cloves garlic or 1/4 tsp. garlic powder
Pepper to taste
Boned skinless chicken breasts

Combine all ingredients, except chicken, in small saucepan and bring to a boil. Allow to cool. Pour over chicken breasts and allow to marinate at least 4 hours. Grill approximately 10 minutes on each side.