Diesel eggs diesel eggs can also be called earth eggs, for the northern title, especially in Beijing and Tianjin 2 for more, is to distinguish between mechanized chicken farms to raise chickens under the title of the egg, because of the feedlot after artificial breeding, feed containing chemical additives, accelerated the frequency of chicken laying, so that the egg itself nutritional value of the ultra-discounted. Chai (earth) eggs refers to artificial rearing, chicken feed almost does not contain chemical elements, such as: rice, vegetables, ground insects, etc. (feed a variety of nutrients more evenly), chickens in a normal environment to hold the nest, laying eggs, nutritive value is quite high (at least the rearing place to lay eggs), so quite favored by consumers, can be distinguished in the following ways; Chai eggs are generally smaller in size, the eggshell is thicker, more for the red skin, knocking open the egg white more The egg whites are thicker and the yolks are more colorful when cracked.