The main nutrition of eggs comes from food, and native eggs are laid by wild hens. Because there are more grasses and vegetables in the food, protein's intake is insufficient. Therefore, the content of carotene and vitamin B2 in this kind of eggs is high, the yolk is big and black, and the total protein content is low, which leads to the overall small eggs.
Matters needing attention in selecting earth eggs
1, from the point of view of size, smaller eggs are generally native eggs, but if they are bigger and the eggs are all the same color, they are probably foreign eggs.
2. Users are advised to judge by touching the hardness of eggshells. Eggs with hard shells are generally native eggs.
3. From the perspective of egg white, the egg white of earth eggs is sticky and crystal clear. On the contrary, the egg whites of foreign eggs are thinner and whiter.
4. From the perspective of egg yolk, the egg yolk of earth eggs accounts for a relatively large proportion. You can gently pick up the yolk with a toothpick, but not foreign eggs.
5. Judging by scrambled eggs, the eggs are scattered, the egg whites and yolks are evenly stirred, and then they are fried in a pot. If the eggs are linked together, they are soil eggs. On the other hand, if the egg is scattered, it is a foreign egg.
The above contents refer to Baidu Encyclopedia-Earth Eggs.