Earth eggs generally come from free-range native chickens, free-range chickens, rich in materials, do not eat artificial feed, the birth of most of the eggs shells are small, yolks are large, egg whites are small, pure and natural, there is no toxic substances in the egg feed, safe and healthy. So the eggs have higher nutritional value and are more suitable for children to eat. Professor Wu Gang, director of the nutrition department of the Union Hospital, in his book "Eat three meals a day", clearly stated that the nutritional value of the earth eggs and ordinary eggs are not very different, and the nutrient content is more than a thousand. From the table we can easily see that there is almost no difference in either protein or vitamins. If you have to catch the taro "specialty", the earth eggs do have more iron than foreign eggs, but foreign eggs also have more calcium than foreign eggs.

Professor Wu Gang said he thinks taro is more delicious and nutritious, because taro has a higher fat content, eaten with a greasy texture, delicious, according to people's preferences, taro's nutritional value is higher. National-level dietitian Wang Leijun believes that there is no difference in the nutritional value of earth eggs and foreign eggs, but the concern that earth eggs are safer is well-founded and understandable. If the taro under the natural food-raised earth chicken, as feed than the bird eggs under the big chicken in terms of safety is more assured. But that doesn't mean foreign eggs are unsafe, unhygienic or untrustworthy.

Mr. Wang Leijun believes that most taro products on the market are fake. He purchased and verified taro products, but after tapping the eggs, he found that the quality of the eggs was no better than ordinary eggs, and therefore warned consumers to give up their feelings of taro worship. Use your eyes to observe the external shape, color and cleanliness of the eggs. High-quality raw eggs, eggshell clean and lusterless, rind with white frost, bright color and obvious air holes. For poor quality eggs, the powdery frost on the surface of the shell is peeling off. Shell color is shiny, dark gray or dull black with oil penetration. There are more or larger fungi. Turn the egg over in the palm of your hand. Fresh eggs are heavy and feel good in your hand. Stale eggs are light in weight; fungal rotten eggs have an astringent skin. Also, quality first eggshells are rough; poor quality eggs give the impression of a smooth hand.

Hold the egg between two fingers and press it against your ear and listen gently, or put a few eggs in your hand and listen to the sound of them hitting each other. If the sound is a really fresh egg; if the sound sounds like a knocking tile, then it's labeled a bloody, rotten egg. If it's hollow, then the egg is empty. If it sounds like a "popping" sound, the egg is cracked. Cracked eggs are susceptible to bacteria, so buy carefully. In other words, use your mouth to gently inhale the heat from the shell, and then smell it through your nose. High-quality raw eggs have a slight smell of quicklime.