When the cabbage is done “cooking”, remove it from the water onto a cookie sheet with sides (to catch any remaining water). Very carefully, remove 12 leaves. Cut the thickest part of center rib out of each leaf, about 1 or 2 inches. There will be a little V in the middle of each leave. Divide the meat filling between the leaves and roll up jelly roll fashion, by tucking in the ends so the filling stays put. Place the rolls in a deep casserole dish.