Beef Stroganoff without consomme

1 pound sirloin steak cut into thin strips 3 tablespoons flour, all-purpose divided 1/2 teaspoon salt 4 tablespoons butter or margarine 3 ounces mushrooms,[...]

1 lb beef sirloin , cut into 1/4 1 tablespoon flour 1/2 teaspoon salt & pepper (or to taste) 2 tablespoons butter 1 (3 ounce) can mushrooms , sliced, drained[...]