Shell Egg Grades Explained: AA vs. A vs. B

If you have ever looked at an egg carton and wondered what the grade stamp actually tells you, you are not alone. Most buyers know that Grade AA is “the best,” but few people can explain what makes it different from Grade A or Grade B. The grading system is simpler than you might think, and understanding it will help you order the right eggs for your business.

What USDA Grading Actually Measures

USDA grading looks at two things: the interior quality of the egg and the exterior condition of the shell. Interior quality is evaluated by candling, which means shining a light through the shell to check the yolk and white. Graders look at how well centered the yolk is, how firm the white (albumen) appears, and whether there are any defects like blood spots. On the outside, they check for shell cleanliness, shape, texture, and soundness. A cracked or misshapen shell gets downgraded regardless of what is inside.

Grade AA: The Top of the Line

Grade AA eggs have the firmest whites and the roundest, most centered yolks. When you crack one onto a flat surface, the white holds its shape in a tight, tall mound around the yolk instead of spreading thin across the pan. That firm white is what makes Grade AA ideal for frying and poaching, where the egg needs to hold together visually. The shells are clean, unbroken, and practically flawless. If presentation matters to your kitchen, Grade AA is the go-to.

Grade A: The Workhorse of Wholesale

Grade A eggs are nearly identical to Grade AA with one small difference: the whites are reasonably firm rather than extremely firm. In practice, the difference is subtle. Grade A eggs are perfectly good for frying, scrambling, baking, and most restaurant applications. They are the standard grade you will find on grocery shelves and in wholesale cases. The vast majority of eggs sold in the United States are Grade A, and for good reason. They deliver excellent quality at a fair price.

Grade B: Behind the Scenes

Grade B eggs have thinner, more spread-out whites and yolks that may be slightly flattened or off-center. The shells might have minor staining or rough texture. None of this affects safety or nutrition. You will rarely see Grade B eggs in a retail carton because they do not look as appealing when cracked open. Instead, they go to liquid egg processors and commercial bakeries where appearance does not matter. If you are buying liquid whole egg, scramble mix, or dried egg powder, there is a good chance it started as Grade B.

What to Ask Your Supplier

For most wholesale buyers, Grade A is exactly what you need. It covers everything from breakfast service to baking without paying the premium for Grade AA. If you run a brunch spot where your poached eggs and sunny-side-ups need to look picture-perfect on the plate, ask about Grade AA availability. And if you are purchasing in high volume for baking or large-scale scrambled egg production, ask whether a Grade B option could save you money without compromising the finished product.

At East Coast Egg Farmers, we carry Grade A as our standard wholesale offering and can source Grade AA for accounts that need it. If you are not sure which grade fits your operation, give us a call. We have helped hundreds of kitchens figure out the right product for their menu.