Enough potatoes to feed your family
Canned tuna, drained
Peel potatoes and cut into suitable even sized chunks. Place in pot, cover with water and some salt, and cook on the stove until just tender. Drain. Arrange potato in well-greased oven proof dish. Spoon sour cream over it. Strew flakes of tuna over the surface. Top with grated cheese. Bake at 180C (350F) until heated through and cheese melted, about 15-20 mins.
Serve with steamed veges or a large salad.