Supermarkets sell most of the eggs inside the earth eggs or foreign eggs, earth eggs are more expensive than foreign eggs, the nutritional value is also higher than it, supermarkets will take the foreign eggs as earth eggs to deceive customers, we buy when you can not see clearly to be cheated. The difference between the earth eggs and foreign eggs is that the eggshell hardness is different, the earth eggs are small, slightly lighter in color is fresh, there is a thin layer of white membrane, it is hard, high calcium content. It is not like the eggs of foreign eggs can be very thin, and the color of foreign eggs is slightly darker, the shell of foreign eggs is more rough, while the earth eggs are more delicate, the hardness is a little harder than it. The color of the yolk is different, the yolk of the earth egg is golden yellow, and the white of the egg is sticky, slightly greenish-yellow, and floats on top of the white of the egg, instead of sinking to the very bottom. A stick inserted in the middle of the yolk is able to stand up. The color of the yolk of an egg that has been colored in the feed is red. Difference in flavor, the flavor of an earth egg is delicious even if it is boiled in plain water, and the flavor of a foreign egg is not as strong. The size of the difference, the earth eggs are small, the yolk is not smaller than the yolk of the eggs of the small yolk of the eggs of the large head, but the water of the egg white is more than the proportion of the egg, frying eggs can be seen. Cooked flexibility is different, will be cooked eggs pinched in the hand, earth eggs even if pinched flat, it will not crack, will be a complete egg, foreign eggs are different, pinched in the hand side of a pinch on the broken. Eggs are the eggs laid by free-range chickens in the home, and can be called eggs, and can also be called wood eggs. Nutritional value and ordinary eggs have no obvious. Suitable people are children elderly malnourished people middle-aged people to supplement protein. If the cholesterol is raised, it will increase the burden on the kidneys, the storage method can not direct sunlight temperature lower place to place longer.

Eggs are commonly used in egg custard, tomato scrambled eggs, potato omelette, tomato and egg soup, omelette, chives scrambled eggs, fried shredded potatoes, omelette, mushrooms scrambled eggs and so on.