Wash the potatoes and cook in plenty of boiling water for about 20 minutes. Rinse under cold water, drain and peel. Peel onion and cut into fine cubes.
Wash herbs, shake dry. Pluck parsley leaves, except for something to garnish, from the stems and chop. Cut chives into fine rolls. Mix quark, mineral water, onion and herbs.
Season to taste with salt, pepper and sugar. Wash the meat, dab dry and season with salt. Heat oil in a pan, fry meat for about 4 minutes, turning. Arrange meat, curd cheese and potatoes on a plate.
Season with chili flakes and garnish with parsley.