Dredge meat in flour and brown in salad oil a few pieces at a time. Put in casserole and add the onions. Brown garlic cloves crushed in the oil in skillet. Add other ingredients except vinegar to skillet. Pour over meat and onions. Cover and bake at 325 degrees until tender (about 2-1/2 hours). Uncover; add red wine vinegar. Return to oven until bubbly on top. Serve from casserole. Entered 10/16/94