Anatomy of Egg: What’s Really Inside Your Egg?
Cuticle, Shell, and Membranes
Cuticle / Bloom
A very thin, almost invisible, natural protective coating on the exterior of the shell. It’s present on freshly laid eggs.
Shell
The hard, outermost layer of the egg, primarily composed of calcium carbonate. Its color (white or brown) depends on the hen’s breed.
Inner & Outer Shell Membranes
Two tough, transparent, fibrous protein membranes located just inside the eggshell. They lie close together, separating only at the wide end of the egg to form the air cell.
The Freshness Indicators
Air Cell
An air pocket that forms between the inner and outer shell membranes, usually located at the egg’s large end. It develops as the egg cools and its contents contract after laying. A smaller air cell signifies a fresher egg.
| Feature | Role in Freshness |
|---|---|
| Cuticle | Seals pores and prevents bacterial entry. |
| Air Cell | Expands as the egg ages; smaller is fresher. |
| Chalaza | Visible strands indicate high quality and freshness. |
The Inner Core
White Albumen (The Egg White)
The clear, viscous liquid that surrounds the yolk, making up about two-thirds of the egg’s total liquid weight. It serves as a rich protein source and a shock absorber for the yolk.
Chalaza
Two opaque, rope-like strands of dense protein fibers extending from opposite sides of the yolk. They act as “seatbelts” to suspend the yolk in the center of the egg.
Yolk (Kuning Telur)
The central, yellow to orange spherical part of the egg. It is the primary nutrient reservoir, packed with vitamins, fats, and essential minerals like choline, lutein, and zeaxanthin.
The EGGHEY Anatomical Advantage
Because an egg is a biological product, its internal anatomy begins to break down the longer it sits in a warehouse. As weeks pass, the thick albumen turns watery, the chalaza dissolves, and the air cell expands.
At EGGHEY, our priority is providing you with eggs that are fresh, nutritious, and completely safe for your family. By shipping our eggs within 12 hours of being laid, they arrive at your door at their absolute peak.
About The Author
We are team egghey. We started this brand to share the incredible taste of truly fresh eggs from our family’s farm in Perak. We hope you enjoy them as much as we do!
