1. It takes about 8- 10 minutes to steam eggs with shells. Because eggs are steamed with water and have shells, the steaming time will be longer. If the eggs are only steamed in water without shell, the steaming time will be shorter.

2. Raw eggs can be boiled with shells. Put cold water into the pot, raise the temperature with moderate fire, boil for 3 minutes with low fire, and soak for 5 minutes after the truce. Boiled eggs are tender, yellow and youthful, and protein has the best transmissibility and is very easy to digest and absorb. In addition, cholesterol in egg yolk does not contact co2 (once air is oxidized, it will become one of the most serious cardiovascular health threats, so it is the most beneficial way to eat for the heart.