Vegetables cleaned and milled through a meat grinder, and finally ground and crumb of bread. The resulting paste is sprinkled with a pinch of salt and 2-3 was allowed to sit for a few minutes. Meanwhile, the butter was stirred and to it was added the egg and spices. Stir well until fluffy. Mix with vegetable puree and stir to make a homogeneous mixture. Sprinkle with chopped parsley and dill and served on cold dishes. The sauce can be diluted with 1-2 tbsp sour cream or yogurt.