Place corned beef in heavy ... heat, cover and simmer until meat is fork tender, ... outer leaves of cabbage and place in a large ... mustards served on side.
Discard outer cabbage leaves; cut into and remove ... to cover rolls. Simmer on stove or in oven ... additional 15 minutes or so to cook flour mixture.
To make filling, saute onion ... seasonings, stirring constantly. Simmer 30 minutes. Remove core from the cabbage and steam for 5 minutes ... Serves 6 to 8.