China's State Food and Drug Administration (SFDA) on Sunday began to check for food companies processing lime-preserved eggs with copper sulphate, following a scandal highlighted in a media report.

Their latest addition, preserved duck eggs ... duck eggs in a mud puddle that also contained lime. Another involves ducks laying eggs in the discarded tea leaves and ashes of a stove.

Their latest addition, preserved duck eggs, is an acquired taste ... then placed into a preservative mixture—often salt, clay, lime, black tea, and ash—and are left to soak for weeks to ...

The USDA says fresh or preserved eggs from countries without the listed diseases will be permitted into the U.S. if travelers have documentation proving the product's country of origin ...