Peel and grate the potatoes. Press out the juice. Peel the onion, slice finely and combine together with the rest of the ingredients and the grated potatoes. Fry small pancake-formed portions in a non-stick frying pan on both sides golden brown at medium heat. Flatten each potato pancake before turning. Serve with the smoked fish. Tip: These fritters can be served warm or cold as finger food. Together with various salads it can be eaten as main dish.