each egg yolks
Egg yolks are rich in choline, lutein, and zeaxanthin, along with complete proteins and healthy lipids including omega-3 fatty acids in pasture-raised or omega-3 enriched eggs. They are also a good source of selenium, phosphorus, and vitamin D.
About
An egg yolk is the nutrient-rich, yellow or golden center of a bird's egg, primarily consisting of lipids, proteins, and various vitamins and minerals that support embryonic development. The yolk comprises approximately one-third of an egg's total weight and is surrounded by the albumen (egg white). Chicken egg yolks are the most commonly used in culinary applications, though yolks from duck, quail, and other poultry are also employed. The yolk's color intensity varies by hen diet—birds fed on feed rich in carotenoids produce deeper golden or orange yolks, while those on standard grain diets yield paler yolks. The flavor is rich and slightly sweet, with a creamy, emulsifying quality due to its lecithin content.
The yolk consists of concentric layers of varying density, from the dense outer yellow to the lighter liquid center. Its ability to emulsify fats and liquids makes it invaluable in both sweet and savory cooking, functioning as a binding and enriching agent.
Culinary Uses
Egg yolks serve multiple culinary functions across global cuisines. They are essential for emulsifying sauces such as hollandaise, béarnaise, and mayonnaise; enriching custards, creams, and desserts; and binding forcemeats and pasta doughs. In baking, yolks add moisture, richness, and tender crumb structure. They are also used to create glazes for pastries and breads. In Asian cuisines, preserved salted yolks (such as in Chinese cuisine) are prized for their concentrated umami and used as condiments or in fillings. Raw or lightly cooked yolks appear in preparations like zabaglione, sabayon, and soft-boiled eggs. The yolk's lecithin content makes it especially valuable in culinary applications requiring emulsification or richness.