Peel and wash the potatoes and cut them into thin slices. Wash parsley, shake dry and chop coarsely. Peel carrots, leaving about 1 cm of green. Wash the carrots. Wash chervil and shake dry. Clean and wash spring onion, dab dry and cut into rings
Heat the oil in a pan and fry the potatoes for about 15 minutes, turning frequently. Melt 1 tablespoon butter in a wide saucepan. Add carrots, sauté briefly and add approx. 5 tbsp. water. Cover and simmer for about 4 minutes until the water has evaporated. Add spring onion, sprinkle with sugar and let it caramelize slightly.
Season with salt, pepper and nutmeg. Shortly before the end of the cooking time, add 1 tsp. butter to the potatoes and sprinkle with parsley. Arrange potatoes, carrots and 1 slice of ham on plates and garnish with chervil. Add the rest of the ham