Onions peel and quarter. Peel, wash and cut carrots into pieces. Wash the meat. Boil 2-3 l water with bay leaf and peppercorns. Simmer covered carrots, onions and meat for about 45 minutes (the meat should be covered with water).
Leave the meat to cool in the stock.
Hard boil eggs. Quench, peel and let them cool down. Mix crème fraîche and yoghurt. Season with salt and pepper. Wash and chop the chives. Chop the eggs. Stir in both.
Season the sauce.
Remove meat from the stock and cut into slices. Arrange on a plate with some chive sauce. Add the rest of the sauce separately.