This article originally appeared on Clean Eating

Choosing a carton of eggs isn’t as simple as grabbing the lowest-priced option on a grocery store’s shelves. You’ve got a few decisions to make: large or extra-large, organic or natural, grade AA or A or B. And don’t forget about other labels that declare different cartons of eggs to be white, brown, non-GMO, enriched, or even vegetarian-fed.

But which of these labels really matter? Here’s what you need to know about choosing eggs, understanding egg carton labels, and picking the best option for your needs.

Why Do Egg Cartons Have So Many Different Labels?

The confusion over egg carton labels lies with the U.S. government – specifically, the U.S. Department of Agriculture (USDA). There are currently no set requirements or definitions for egg carton labels, which means egg producers can pretty much put any phrasing they want on each carton.