Flank Steak Marinade by Guest Chef Kariann

3/4 cup soy sauce
3 Tbsp. dry mustard
1/3 cup lemon juice
1 tsp. pepper
1 1/2 cup oil
1/2 cup red wine vinegar
1/4 cup worcestershire sauce

Sprinkle garlic salt over meat. Pour marinade over meat. Marinate for 24 hours, then grill.