1. Boil white eggs for 3 to 5 minutes. If you want to eat candied eggs with soft yolk, you can choose 3 minutes. Hard-boiled eggs need to be boiled for about 5 minutes. Boiled eggs can be eaten directly, but also with salads or other ingredients.

2. According to the analysis, every100g of eggs contains12.58g of protein, mainly ovalbumin and ovoglobulin, and contains 8 kinds of amino acids necessary for human body, which is very similar to the composition of human protein. The absorption rate of protein in eggs can reach 98%. Every100g of egg contains11~15g of fat, which is mainly concentrated in yolk and easily digested and absorbed by human body. Egg yolk is rich in lecithin, sterol, egg yolk, calcium, phosphorus, iron, vitamin A, vitamin D and B vitamins.