Which Eggs Have the Darkest Yolks? An Expert Guide
                                
                                
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                                    5 min read                                
                            
                                According to agricultural studies, the color of an egg yolk is almost entirely dependent on the hen's diet. So, which eggs have the darkest yolks? While many people believe it's linked to the hen's breed, the truth is that a diet rich in carotenoid pigments, found in plants like marigold petals and alfalfa, is the primary driver of darker yolks, most commonly found in pasture-raised eggs.