Century egg

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Century egg
A century egg sliced open
Alternative namespreserved egg, hundred-year egg, thousand-year egg, thousand-year-old egg, millennium egg, black egg, blacking egg, skin egg
Place of originChina
Main ingredientsEgg preserved in clay, ash, salt, quicklime, and rice hulls
Variationsduck, chicken or quail eggs

A century egg is a cured duck egg. They are made by putting the egg in a mix of clay, salt, quicklime, and ash. A century egg is not really 100 years old. People call it a century egg because it looks different and takes months to make. Century eggs can also be made from quail or chicken eggs.