Boiled egg method
Ingredients: eggs, water.
Steps:
1, in cold water, eggs can overwhelm eggs. After the fire boils, turn to low heat and cook for 7 minutes.
2. After the eggs are cooked, pick them up and wash them with cold water for about 15 seconds (easy to shell).
3. The eggs are cooked.
Extended data:
Edible guide
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.
Uncooked eggs are more harmful. Raw eggs are not only contaminated by salmonella, but also have two harmful substances, anti-enzyme protein and avidin.
The former will affect protein's digestion and absorption; The latter can combine with biotin in food, leading to the lack of biotin in human body, resulting in mental fatigue, muscle soreness and other symptoms. Once the eggs are cooked, the above two substances will be destroyed.
References:
Baidu encyclopedia-boiled eggs