Usually 3 to 5 minutes. Wash the eggs before cooking, so as not to affect the health of the bacteria attached to the eggshell. Add a proper amount of salt to the water where the eggs are boiled, and cook for about 5 minutes on medium heat after the fire is boiled. If it is an egg with a sugar heart, boil it for about 3 minutes.

Generally speaking, "the egg is boiled for 3 minutes", the egg white is soft and the yolk is just cooked. "Boil the egg for 5 minutes", the egg white is ripe and tender, and the yolk is ripe but not hard.

Extended data

Boiled eggs are rich in nutrients and have high nutrient absorption rate. Therefore, while providing rich and high-quality nutrition to the human body, excessive consumption is not conducive to health, leading to overnutrition, indigestion, cardiovascular and cerebrovascular diseases and so on. Therefore, people of different ages, physical strength or mental labor intensity need to eat different amounts of eggs every day.

The amino acid ratio of egg protein is very suitable for the physiological needs of human body, and it is easily absorbed by human body, so it has high nutritional value. In addition, eggs are rich in calcium, phosphorus, iron, vitamins A and B, and also contain many other vitamins and trace elements necessary for human body. They are a good supplement for children, the elderly, pregnant women, patients with hepatitis, tuberculosis, anemia and patients in recovery after surgery.

References:

Baidu encyclopedia-boiled eggs