Wash the potatoes thoroughly and boil them in a pot covered with water. Cook for about 20 minutes. Meanwhile clean the carrots, leave some green and wash. Peel and finely chop the garlic.
Clean and wash the sugar snap peas. Drain the potatoes, rinse and peel. Put carrots in boiling salted water and cook for about 15 minutes. Add sugar snap peas 3 minutes before the end of cooking time.
Wash the meat, dab dry. Heat 2 tablespoons of oil in a frying pan, fry the meat on each side for about 3 minutes. Add garlic and rosemary 2 minutes before the end of the frying time. Then season the meat with salt and pepper.
Heat 2 tablespoons of oil in a second frying pan and bake the potatoes for about 6 minutes, turning them until golden brown. Season with salt and pepper. Remove meat from the pan and keep warm. Deglaze the meat with lamb stock and let it boil down for 4-5 minutes.
Meanwhile, wash the chervil, dab dry and pluck the leaves from the stems. Add the chervil to the stock. Pour the vegetables into a sieve and let them drip off. Arrange potatoes, vegetables, meat and stock on plates.
Serve garnished with parsley and rosemary.