Ingredients
Method
Combine mashed potato with ketchup, tuna and black pepper and shape into 4 equal balls.
Flatten slightly and fry, turning regularly, until thoroughly hot and crispy on both sides.
Sprinkle with grated parmesan and grill until cheese is crispy.
Serve with white sauce and peas.
As a variant, grill one and a half anchovy fillets on top of each fish cake, with the parmesan.