Clean and wash the spring onions and tomato. Cut spring onions into rings. Cut tomato into quarters, remove seeds and dice. Mix quark, crème fraîche and mineral water. Stir in spring onions and diced tomatoes and season with salt and pepper. Clean, wash and cut the peppers into fine rings.
Wash the salad and dab dry. Heat oil in a pan, add frozen potato pancakes and fry on each side for about 2 minutes. Remove from the pan and brush one side of each buffer with pesto. Cover 2 buffers with salad leaves, paprika, ham and quark cream. Place the rest of the buffers on top. Serve with basil and tomatoes sprinkled with pepper to taste