Try this Japanese Style Tuna and Potato casserole.
Ingredients------
1 kg potato peel and cut 3cm 1 large onion slice 5mm 1 tin of tuna sugar 3 tablespoon white wine 3 table spoon soy sauce 2 table spoon butter 2 table spoon pepper garlic powder water 1 cup
Process-------
1. Place all ingredients in the pan or casserole. 2. Cook untio potatoes softens. (170º oven 60min).