Sesame Flank Steak

Ingredients

• 3 tablespoons Soy sauce
• 2 tablespoons Sesame Oil
• 1 tablespoon Vinegar
• 1 tablespoon Brown sugar
• 1 tablespoon Fresh ginger grated
• 1 teaspoon Dry mustard
• 1 teaspoon Worcestershire sauce
• 1 1/2 pound Flank Steak