March 30, 2012
Century eggs are the result of aging eggs in a mixture of rice hulls, quicklime (calcium oxide), ash, salt, and clay for an extended period of time. Eggs prepared in this manner have an amazing longevity.
Century eggs also undergo a curious change in appearance; yolks become a blue-green-gray color and the whites become a translucent orange.
Century eggs are still made with traditional methods, though modern techniques have improved their production. The secret is an alkaline environment to prevent spoilage and chemically change the eggs.
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