Place fat back in pan. Fry out well. Clean fish, wash and remove skin. Cut into 2 inch squares. Add fish to fat, then add sliced onions or chives, slice potatoes an inch thick and cover fish with potato slices; add seasoning. Add 3/4 cup of boiling water,and more if needed. Cook slowly until potatoes and fish are tender, usually about 1/2 hour. Serves 6.