Generally speaking, duck eggs can be boiled in cold water for about ten minutes. According to personal preference, you can also choose according to the degree of raw and cooked eggs, tender eggs 1 minute, half-cooked eggs for 3-5 minutes, and fully cooked eggs 10 minute.

Duck eggs boiled in cold water are not allowed to explode. Duck eggs will slowly expand inside and outside with the gradual increase of water temperature. When the water temperature is enough to solidify protein, their eggshells will expand almost as much, so that they won't expand and break.

Extended data

Advantages of boiled duck eggs:

1, reducing fire and moistening skin. Duck eggs are cold, which can nourish yin and reduce fire, remove heat and moisturize skin. Salted duck eggs will reduce fire better than fresh duck eggs.

2, the effect of nourishing yin and clearing lung. Salted duck eggs are sweet and cool, and have the function of nourishing yin and clearing away lung heat, which is especially suitable for people with weak body, dry throat, diarrhea and dysentery after illness.

3, it also has the effect of calming the liver and improving eyesight. The yolk of salted duck eggs is rich in vitamin A and carotene, both of which contribute to the function of the liver, so salted duck eggs have the nutritional value of calming the liver and improving eyesight.

4. It can also prevent anemia. Duck eggs contain far more mineral elements than eggs, such as calcium, iron, manganese, etc., especially calcium and iron, which is suitable for people who need iron and calcium supplements urgently, and can improve bone development and prevent anemia.

5, nourishing and strong. Most nutrients in duck eggs, such as fat, protein, carbohydrates, vitamins and mineral elements, are important nutrients to maintain human physiological functions, so salted duck eggs can also supplement nutrition and strengthen the body.