Peel the carrot. Peel and wash the potatoes. Coarsely grate potatoes and carrot. Squeeze the grater.
Mix grater and egg. Season with salt and nutmeg. Heat oil in a pan (approx. 20 cm Ø) and form potato mixture into a Rösti. Fry for approx. 15 minutes, turning carefully
Wash the apple, quarter it, remove the core and cut the quarters into thin slices. Caramelise the sugar in a pot. Deglaze with apple juice, bring to the boil and stew apple slices for about 5 minutes. Pour into a sieve and collect the juice. Wash lemon hot, grate dry, peel off some peel for decoration with a zest ripper. Cut the fruit in half and squeeze the juice from one half.
Mix quark, 1-2 tbsp. apple stock and 1-2 tsp. lemon juice. Arrange the rösti, quark and apple compote. Sprinkle with lemon peel