Peel the onions. Cut 1 onion into rings. Chop the rest of the onions finely. Clean and wash spring onions and cut into thin rings. Wash the chives and cut into small rolls.
Mix yoghurt and quark. Add spring onions, diced onions and chives to the yoghurt. Season to taste with salt and pepper. Rinse the maties briefly under cold running water and dab dry.
Arrange the matie with the sauce on a plate. Put onion rings on the matie. Garnish with parsley and tomatoes. Parsley potatoes taste good with it.