1 flank steak — (1 to 1 1/2 lb.)
1/4 cup Sauterne wine
1 tablespoon Soy sauce
1 Clove garlic — minced
1 can beef broth — (10 1/2 oz.)
1 tablespoon Catsup
1 teaspoon Prepared mustard
1 tablespoon Instant minced onion
2 tablespoons Cornstarch
2 tablespoons Water
1/4 pound Fresh mushrooms — sliced
Place steak in crockpot. Combine wine, soy sauce, garlic, broth, catsup, mustard and onion; pour over steak. Cover and cook on low for 6 to 8 hours. Dissolve cornstarch in water; stir into pot. Add mushrooms. Turn to high; cover and cook on high 20 to 30 minutes. From Crockery Cookery by Mable Hoffman.