Beef tallow is a flavorful cooking fat obtained by slowly rendering the fat from any cut of beef. Once melted, the tallow is left at room temperature to harden and solidify, achieving a texture similar to butter.

Steak 'n Shake will cook its fries in 100% beef tallow by February 2025, replacing vegetable oils. The move follows growing criticism of seed oils, linked by some to health issues like obesity and inflammation. Beef tallow, once common in fast food, is praised for flavor but debated for its saturated fat content.

The fast-food chain Steak 'n Shake will be cooking its fries in "100% all-natural beef tallow" by the end of February at all of its locations in the United States.

Steak n Shake announced that it is moving forward with the use of 100% all-natural beef tallow in all its restaurants. Steak n Shake has long been famous for its shoestring fries – and it will now fry them in the best way possible.

According to a press release published on January 16, fellow fast-food chain Steak n Shake is hopping on the beef tallow train.

Steak 'n Shake has announced plans to return to cooking its iconic shoestring fries in all-natural beef tallow. Here's why, and what to know about the change.

It's not the first fast food chain to use beef tallow for fries. The change comes amid some consumer backlash against the perceived toxicity of vegetable oils.