Beef with tart

3 tablespoons butter 1 onion , halved, sliced length ways 250 g mushrooms , sliced 2 cloves garlic , crushed 500 g steak, sliced into thin strips across the[...]

4 lbs beef stew meat 1/4 cup flour 1/4 cup oil 2 large onions , peeled and sliced 1 medium tart apple , pared, cored, chopped 3/4 teaspoon dry mustard 1/4[...]