Peel the carrots, leaving about 2 cm of green and wash them. Peel, wash and halve the kohlrabis. Cut kohlrabi halves first into thick slices, then into triangles. Melt the fat in a wide pot.
Covered carrots and broth and stew for about 5 minutes. Wash potatoes thoroughly and cook in water for about 25 minutes. Add kohlrabi to the carrots and steam for 5-7 minutes. Wash the parsley, pluck the leaves from the stalks and cut into fine strips.
Mix quark with coriander, sesame paste and half of the parsley. Season to taste with salt and cayenne pepper. Use a skimmer to lift vegetables out of the stock and arrange on plates. Stir 3-5 tablespoons of vegetable stock into the quark.
Drain the potatoes and arrange on the plates with the curd sauce. Sprinkle vegetables and quark with the remaining parsley.