7 minutes. Pour cold water into the pot, raise the temperature over slow heat, boil over low heat for 2 minutes, then stop the heat and soak for 5 minutes. This method will make the egg whites tender and smooth, and the yolks will be solid but not old. Avoid cooking for too long, otherwise the ferrous ions in the egg yolk will react chemically with sulfur ions to form a brown precipitate of ferrous sulfide, which will hinder the body's absorption of iron. After stopping the fire and soaking, take it out and put it in boiling or cold water to cool down for half a minute to make it easier to peel. ”

1. 3-minute eggs: The egg white is cooked and soft, and the yolk is undercooked and slightly runny. “3-minute eggs” are slightly cooked eggs, which are the easiest to digest and take about 1 hour and 30 minutes to digest.

2. 5-minute eggs: The egg white has solidified, while the yolk is in a semi-solid or flowing state. "5-minute eggs" are half-boiled eggs, which take about 2 hours to digest in the human body; eggs that have been boiled for too long will It takes 3 hours and 15 minutes to digest in the human body.

3. Eggs cooked within 10 minutes: In terms of nutrition, eggs boiled within 10 minutes have the highest digestibility and basically no loss of nutrients.

4. Eggs cooked for more than 10 minutes: If eggs are cooked in boiling water for more than 10 minutes, a series of chemical changes will occur inside the eggs, making them difficult to digest. Sulfides may also be decomposed due to prolonged heating, which is harmful to the body. Harmful.

Extended information

Boiled Egg is one of the most common ways to eat eggs. It is made by boiling eggs in water.

Boiled eggs are rich in nutrients and have a high nutrient absorption rate. Therefore, while they can provide rich and high-quality nutrients to the human body, excessive consumption is not good for health, leading to overnutrition, indigestion, and cardiovascular and cerebrovascular diseases. etc. Therefore, the number of eggs that people of different ages and physical or mental work intensity need to eat every day is also different.

Reference: Baidu Encyclopedia - Boiled Eggs