material

3 main ingredients and eggs.

Appropriate amount of auxiliary materials and water.

The practice of boiling eggs in water

1, cover the egg water in cold water until the egg is covered, and immediately turn to low heat for 7 minutes after the fire is boiled.

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

3. Finished drawing of boiled eggs.

Extended data

According to nutritionists, the digestion time of eggs with different boiling time is different in 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 eggs, and the digestion time in the human body is about 2 hours; Eggs boiled for too long will take 3 hours 15 minutes to digest in human body.

If eggs are boiled in boiling water for more than 10 minutes, a series of chemical changes will occur inside. Protein structure 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 reacts with iron in egg yolk to form iron sulfide which is not easily absorbed by human body, resulting in more nutritional losses.

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