Finely chop the onion. Wash the potatoes and grate coarsely. Grate cheese coarsely as well. Mix potatoes, onion, egg yolk, flour, corn and cheese. Season with salt and pepper
Heat the oil in a coated pan. Bake 3 golden brown buffers from the potato dough in it
Wash cucumber, radishes and herbs. Finely dice the cucumber. Cut radishes into sticks. Peel and chop garlic. Cut chives into small rolls
Mix quark, yoghurt and garlic. Stir in radish sticks, chives and cucumber cubes. Season with salt and pepper. Arrange potato pancakes, ham and yoghurt dip. Garnish with parsley