Dredge your meat pieces in salted and peppered flour with the dry mustard sprinkled over it and brown pieces in bacon grease. Put in covered casserole or crock pot and cover with a mixture of all the other ingredients. Add enough liquid(stock or water) to make sure pieces will be under. Bake covered at 150ºC . for 2.5-3 hrs until meat is tender. Take off cover and bake until sauce is good and thick.