1, boiled eggs usually take about 8 minutes, and boiled eggs usually take 3 to 5 minutes. It is recommended not to exceed 10 minutes. Eggs cooked at different times have different digestion time in human body. "3-minute egg" is a lightly cooked egg, which is the easiest to digest. It takes about 1 hour for 30 minutes to digest. "5-point egg" is a half-cooked egg, which takes about 2 hours to digest in the human body; It takes 3 hours 15 minutes for eggs boiled for too long to be digested in human body.

2. Eggs are divided into three layers: yolk, egg white and eggshell. The freezing temperature of egg yolk is 68℃-765438 0℃, and the freezing temperature of egg white is 62℃-64℃. If the fire is too big when cooking eggs, the egg white with low freezing temperature outside the egg yolk will quickly solidify and harden, thus preventing heat from being continuously transferred to the egg yolk, affecting the solidification of the egg yolk with high freezing temperature, and making the cooked eggs clear, yellow and immature. If cooked for too long, the protein will be excessively denatured, and the eggs will become hard and unpalatable, which will affect digestion and absorption. Therefore, boiled eggs should be cooked properly. First, the eggs should be put into a pot with cold water, and then slowly heat up. After the water boils, turn off the fire for about 3 minutes. After cooking, don't take it out in a hurry, cover the pot and stew for 2 minutes, then take it out and eat it with cold water.