Mix chili sauce, water (one full jar) and brown sugar together. Pour most, but not all, in roasting pan. Add most, but not all, sliced onions. Rinse brisket, season with salt to taste and place fatty side up on top of onions. Add bay leaf. Add carrots and potatoes around brisket as desired. Top with remaining onions and sauce. Cover and bake for 2 1/2 - 3 hours at 325ºF. Remove and allow to cool about 1/2 hour. Slice brisket (against the grain). Return brisket to juice in the pan until ready to serve. Serves 10-12.