Please note that you should never self-prescribe TCM ingredients. A TCM ingredient is almost never eaten on its own but as part of a formula containing several ingredients that act together. Please consult a professional TCM practitioner, they will be best able to guide you.
Preparation: Extract the yolk from the egg and consume raw or cooked
Main actions according to TCM*: Nourishes Yin and moisturizes Dryness. Nourishes blood and dispels Wind.
Contraindications*: Contraindicated for those with hypertension, coronary heart disease and atherosis.
Source date: the Qing dynasty
Number of ingredients: 10 herbs
Formula key actions: Nourishes Yin. Nourishes Blood. Calms the Liver. Extinguishes Wind.
Ji Zi Huang is a king ingredient in E Jiao Ji Zi Huang Tang. Like the name indicates, it means it has more power than other ingredients in the formula.
Source date: 220 AD
Number of ingredients: 5 herbs
Formula key actions: Enriches the Yin. Causes Fire to descend. Eliminates irritability. Calms the spirit.
Ji Zi Huang is an assistant ingredient in Huang Lian E Jiao Tang. This means that it either serves to reinforces the effect of other ingredients or it moderates their toxicity.
In Traditional Chinese Medicine (TCM), chicken egg yolks are plants that belong to the 'Tonic herbs for Yin Deficiency' category. Tonic herbs are used for patterns of Deficiency, when one lacks one of the 'Four Treasures' (Qi, Blood, Yin and Yang). Yin tonics have a heavy, moist nature. They either nourish the Kidneys and Liver or moisten the Lungs and Stomach. Extreme Yin Deficiency often translates into a 'burn-out', unfortunately more and more common among people today. It is worth mentioning that another great remedy against Yin Deficiency is a lot of rest and sleep; no herb will ever be able to replace this!
Furthermore chicken egg yolks are plants that are Neutral in nature. This means that chicken egg yolks typically don't affect the balance in your body. Balance between Yin and Yang is a key health concept in TCM. Eating too many "Hot" (Yang) ingredients can lead to an imbalance whereby one has a Yang Excess. The inverse is true as well: too many "Cold" (Yin) ingredients can lead to a Yin Excess. The Neutral nature of chicken egg yolks means that you don't have to worry about that!
Chicken egg yolks also taste Sweet. The so-called 'Five Phases' theory in Chinese Medicine states that the taste of TCM ingredients is a key determinant of their action in the body. Sweet ingredients like chicken egg yolks tend to slow down acute reactions and detoxify the body. They also have a tonic effect because they replenish Qi and Blood.
The tastes of ingredients in TCM also determine what Organs and Meridians they target. As such chicken egg yolks are thought to target the Heart and the Kidney. In addition to regulating Blood flow, in TCM the Heart is believed to be the store of the 'Mind' which basically refers to someone's vitality. The Kidneys do not only regulate the urinary system but also play a key role in the reproductive system and the growth and aging process of the body.
Chicken egg yolks are also eaten as food.