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Century egg

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Century egg

Century egg

Name variations Edit

  • preserved egg
  • hundred-year egg
  • thousand-year egg
  • thousand-year-old egg
  • millennium egg
  • Ming Dynasty egg

About Century eggs Edit

Century egg (or Pidan in Mandarin), is a Chinese cuisine ingredient made by preserving duck, chicken or quail eggs in a mixture of clay, ash, salt, lime, and rice hulls for several weeks to several months, depending on the method of processing. Through the process, the yolk becomes a dark green and creamy with an odor of sulphur and ammonia, while the white becomes a dark brown, transparent jelly with little flavor.

The transforming agent in the century egg is its alkaline material, which gradually raises the pH of the egg to around 9, 12, or more during the curing process. This chemical process breaks down some of the complex, flavorless proteins and fats, which produces a variety of smaller flavorful compounds.

Some eggs have patterns near the surface of the egg white that are likened to pine branches.

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