material

3 main ingredients and eggs.

Appropriate amount of auxiliary materials and water.

The practice of boiling eggs in water

1, in cold water, the egg can cover the egg, and immediately turn to low heat for 7 minutes after the fire boils.

2. After the eggs are cooked, pick them up and wash them with cold water for about 15 seconds (easy to shell).

3. The boiled egg is finished.

Extended data

According to nutritionists, eggs cooked at different times take different time to digest in the human body. "3-minute egg" is a lightly cooked egg, which is the easiest to digest and takes about 1 hour for 30 minutes. "5 minutes" eggs are half-cooked, and the digestion time in human body is about 2 hours; Eggs boiled for too long take 3 hours to digest in the human body.

When eggs are boiled in boiling water for more than 10 minutes, a series of chemical changes will occur inside. The structure of protein becomes more compact, and it is not easy to contact with protein digestive enzymes in gastric juice, so it is more difficult to digest.

Protein in eggs contains more methionine. After a long period of heating, it will decompose into sulfide, which will react with the iron in the egg yolk to generate iron sulfide which is not easily absorbed by the human body, resulting in more nutritional losses.

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