1, the time required to boil eggs is not a fixed data. This needs to be decided according to people's tastes. If the eggs are boiled in cold water, it takes about 3 to 5 minutes, and the eggs can be boiled to half-cooked. It takes about 10 minutes to do it well. Generally speaking, eggs taste best when boiled in cold water for 8 minutes.

2. The time required to cook eggs is also directly related to the firepower when people cook eggs. If you put the eggs in the pot and cook them directly with fire, the eggs in the pot will be cooked in five or six minutes, but the skin of the boiled eggs is easy to crack. If the fire is weakened after the pot is boiled again, it will take 10 to 12 minutes to cook the eggs in the pot.

3. Boiled eggs can be boiled in boiling water or cold water, but there are a lot of pores on the surface of eggshells. If eggs are cooked in cold water, some bacteria in cold water can easily enter the eggs, causing certain pollution to the yolk and egg white, which will seriously reduce the nutritional value of native eggs. Therefore, it is best to cook eggs in boiling water and cold water.

It is better to boil eggs with boiling water than with cold water. However, it is not ideal to boil the frozen eggs that have just been taken out of the refrigerator, because under the action of heat expansion and cold contraction, the shell of the frozen eggs will break quickly after entering the pot, resulting in incomplete cooking of the eggs and loss of nutrients in the eggs. If such eggs are to be boiled, it is best to soak them in warm water for five minutes. If you are afraid of trouble, you can cook it directly in cold water.