What is the most important part of an egg?

This is a tricky question! The answer depends on what you're looking for:

From a nutritional standpoint:

* The yolk is the most important part as it contains most of the protein, fat, vitamins, and minerals.

From a developmental standpoint:

* The embryo is the most important part, as it will eventually become a chick. This is only present in fertilized eggs.

From a culinary standpoint:

* The yolk is often considered the most important, as it gives the egg its richness and flavor.

* The white is also important for binding and thickening in cooking.

So, there is no single "most important" part of an egg. It depends on your perspective!