Yes, it's called double yellow eggs. It's not easy to buy.

The reason for the formation of double yellow eggs is that two eggs mature at the same time, break away from follicles and are brought into the fallopian tube, where they are wrapped in protein, shell and eggshell in turn, thus forming double yellow eggs. Sometimes, even multiple eggs mature at the same time and are brought into the fallopian tube together, resulting in multiple yellow eggs. If a double yellow egg can hatch, it will hatch two chickens. Due to insufficient nutrition (there are two chickens in one egg), the survival rate of this egg is not high.

The main components of egg yolk are 17.5% protein (protein food), 32.5% fat, about 48.% water and 2% minerals, and trace components such as vitamins (vitamin food). The fat in egg yolk is mainly monounsaturated fatty acids, more than half of which is the main component of olive oil-oleic acid, which is beneficial to prevent heart disease. When it comes to vitamins, there is no doubt that most of them are concentrated in egg yolk.

yolk contains valuable vitamins a and d, as well as vitamin e and vitamin K .. These are "fat-soluble vitamins", and there is no trace of them in egg white at all. Even the water-soluble B vitamins are mostly found in egg yolk. In fact, some of the yellowish color in the yolk of chicken eggs comes from the color of riboflavin, which is vitamin B2, which can prevent common diseases such as mouth cracking, glossitis and lip pain cracking. What about all kinds of trace elements (trace element food)? It is also concentrated in the yolk. Egg yolk contains a lot of phosphorus and a lot of iron. Although the absorption rate of iron (iron food) in egg yolk is relatively low, it still plays an important role for infants who cannot eat meat.

At the same time, all lecithin in eggs comes from yolk, and lecithin (lecithin food) can provide choline and help to synthesize an important neurotransmitter-acetylcholine. Therefore, the baby's first complementary food is often egg yolk. Egg yolk is good for children to supplement iron, and also good for children's brain development. In addition to rich nutrients and healthy lecithin, egg yolk also contains unexpected healthy (healthy food) ingredients-lutein and zeaxanthin. Lutein and zeaxanthin are carotenoids, but they cannot be converted into vitamin A in human body. Even so, they have a strong antioxidant effect, especially for protecting eyes (eye food). The imaging part of the human eye is the retina, and the retina has a "yellow spot", and the yellow inside comes from lutein and zeaxanthin. These two substances help the eyes to filter harmful ultraviolet rays, delay the aging of the eyes, prevent eye diseases such as macular degeneration and cataracts, and are also good for the heart.