Wash the potatoes well and boil in water for about 20 minutes
Boil the egg hard for about 10 minutes. Dice cucumber. Clean, wash and cut radishes into sticks. Wash the chives and cut into small rolls. Wash the chervil and pluck the leaves
Quench the egg and let it cool in water. Mix salad cream and yoghurt. Season with salt, pepper and 1 pinch of sugar. Peel and chop the egg. Fold cucumber, radish, chives and egg into the tartar sauce
Drain the potatoes, possibly quench and peel them. Serve with aspic and some tartar sauce. Sprinkle potatoes with salt and chervil. Add the rest of the tartar sauce
Drink: beer or water