Pound the pork tenderloin until it is flat. Dredge in flour and pan fry in corn oil, browning both sides. Remove the schnitzel from the pan. Add chopped onion and mushrooms to the pan, and then saute. To finish, add red wine, Worcestershire sauce, sour cream, and brown gravy. Place on serving dish and top with sauce from pan.
Recipe courtesy of Essen Haus