1/2 c. oil
1/3 c. soy sauce
1/4 c. lemon juice
2 tbsp. prepared mustard
2 tbsp. Worcestershire sauce
1 clove garlic or 1/2 tsp. garlic salt
1 tsp. pepper

Mix in Tupperware container until oil is mixed in. Add either beef or chicken and marinate overnight or at least 12 hours. Great for on the grill.