2. Salted duck egg itself belongs to a kind of pickled food, which is relatively rich in nutritional value and rich in sodium ions, fat and carbohydrates.
3. It is also rich in calcium ions. Eating some salted duck eggs in a proper amount can effectively provide energy for human metabolism. However, it should be noted that eating too much may absorb a large amount of nitrite, which is not conducive to human health. In severe cases, it may lead to high blood pressure, so it is recommended to eat in small amounts.