Panera Bread wants to know what's in your egg sandwich.

The company is petitioning the Food and Drug Administration to define an egg in a direct challenge to its competitors.

Speaking with CNBC, company spokesperson Sara Burnett said that neither they nor other companies are given guidance on what constitutes the egg in fast food products.

And while the company prides itself on using fresh and real ingredients it claims some of its competitors "sell an egg product that contains multiple additives."

CNBC reports that the company has been working in recent months to make its egg sandwiches stand out from the crowd, even taking them out of form-fitting shapes and throwing them directly on the griddle.

It has also long been on a path to getting rid of artificial ingredients in its food having announced that its products are "100 percent clean" in 2017.