Another Reason to Avoid 1,000 Year-old Eggs

[Randy W]

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Unless You Like Toxic Chemicals, Skip This Chinese Delicacy

 

 

Thirty preserved egg companies are being shut down for using industrial copper sulphate, a toxic chemical, to expedite the egg-festering process. South China Morning Post reports:

Industrial copper sulphate usually contains high levels of toxic heavy metals, including arsenic, lead and cadmium,

so

is banned for use as a food additive.

The eggs are usually preserved with baking soda, salt, and quicklime for about two months. The process turns yolks dark green and the egg white into a stiff, dark jelly. Using copper sulphate could significantly reduce the processing time while achieving the same effect.