So what goes into making a perfect fry?
But it also makes them non-vegetarian.
All but one of these have swapped the tallow out for supposedly healthier oils in recent years.

Photo: Shutterstock
Most people know that they 100% weren’t at one point.
McDonald’s uses something called “beef extract” in the ingredients for its famous fries.
McDonald’s, for its part, isn’t telling because they don’t legally have to.

Photo: Boyloso / Shutterstock
A food scientist toldMashablethat it is likely just “beef adjacent” but no one is really sure.
The chain’s fryers contain beef tallow, as confirmed by a rep for the restaurant.
The chainactually fries everything in iteven its chicken wings.

Kaley Roberts/ Eat This, Not That!
Smashburger
Smashburger started in 2007 in Denver with the aim of becoming a better burger company.
Portillo’s isn’t hiding this fact either and includes the info right on the required allergen list.
There was a lot of chatter and questions online about Outback using beef tallow.

Courtesy of Buffalo Wild Wings

Smashburger / Facebook

Courtesy Portillo’s

bigcheaptrickfan/ YouTube