Preserved egg is a Chinese preserved food product and delicacy made by preserving duck, chicken or quail eggs in a mixture of clay, ash, salt, quicklime, and rice hulls for several weeks to several months.
It has higher protein nutrition than a normal egg and it has less carbohydrate content. Also, iron is also a much essential nutrient needed by the human body and surprisingly, the century egg is an excellent source of it.
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