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How do egg producers know they are... | Almanac.com

How do egg producers know they are...

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How do egg producers know they are putting good eggs on the market?
Shortly after an egg is laid, it is placed in front of a light source that reveals the condition of the innards. This process, called candling, can detect cracks in the shell or harmless but unappetizing blood spots on the yolk. It also reveals the size of the egg’s air cell: the smaller the cell, the better the egg.

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