Quizzes & Puzzles1 min ago
Eggs
14 Answers
How do egg sellers know if the egg has a double yolk ?
X ray is not an answer because double yolk eggs used to be sold by peasant farmers etc
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For more on marking an answer as the "Best Answer", please visit our FAQ.Its called "candling". You hold the egg in front of a bright light and you can see through the shell, enough to tell if the egg is fertile (has an embryo growing) and if there are 2 yolks. I believe that there is one manufacture who sells boxes of guaranteed double yolkers (some breed are more likely to produce them than others, I understand) but I haven't seen them to buy round me (hampshire)
...and here's a website doubleyolkers