Grate the potatoes, and mix it with egg parsley, salt, pepper, and the flour.
Cut half of the onion and the garlic clove in small pieces and mix it with the rest.
Dived the mixture in four and make and fry them in a round shape in the frying pan.
Cut the rest of the onion in rings and fry in a frying pan.
Cut the tomato in slices and fry in a frying pan together with the fish.
To make the burger, place on of the potato cakes on a plate. Add two slices of cheese, the fish and then the tomato slices. End it all with another potato cake.