Eggs must be absolutely healthy shells and not too fresh - eggs a few days to peel more easily. Put them in a saucepan, cover completely with cold water and bring to a boil. Reduce heat and simmer for 15 minutes. Cool immediately in cold water. Peel, for easier starting from the thicker end, where are hollow. Peeling under water is usually easier. Chop. Other products are placed in a pot and bring to a boil for 10 minutes. Cooled marinade, add the onions and eggs, the pan is closed and put in refrigerator. Keep in refrigerator until eggs marinated for at least 1 day. Stored in a refrigerator.