So far he has come up with 25 - 30 distinct blends of burger patties with hundreds of additional variations available.
The product is sometimes used as an ingredient in vegetarian burger patties.
They cost $4.80 per pound, a box contains 10 burger patties (2.5 pounds), and they have 130 calories each (50 calories from fat and zero carbs).
In the United Kingdom McDonald's uses "100% forequarter and flank" in its burger patties.
Ingredients that go into making the burger patties are all natural and dairy-free.
The process factory is located in Quakertown, Pennsylvania, which originally produced meatballs and burger patties.
Last summer, Burger King introduced a new sandwich, constructed of two burger patties, two cheese slices, lettuce, onion, pickles and King sauce.
Steer clear: Skip those pricey premade burger patties.
Instead, the square burger patties (which are fresh ground beef rather than frozen patties) are their signature items.
Maybe she was concentrating on the burger patties, trying to judge when to turn them over.