Tag: Egg parts

Most eggs sold in grocery stores are not fertilized, but a small white disc on the yolk's surface, known as the germinal disc, is one of several natural structures found inside an egg. This often-misunderstood anatomy is where a lesser-known, rope-like structure—the white membrane in an egg yolk—plays a critical role.

An egg is a surprisingly complex biological structure, consisting of more than just the golden center we often focus on. While the yolk is the most nutrient-dense part, it is only one component of a complete egg, which also includes the egg white, protective membranes, and a hard shell.

According to the American Egg Board, the yolk makes up just over one-third of a liquid egg's weight. This compact, nutrient-dense component is the power center of the egg, containing the majority of its fats, vitamins, and minerals. Understanding how much of an egg is yolk can impact both your culinary results and nutritional intake.