
In-N-Out’s classic “animal style” burger and fries used to be a secret menu item at the fast food chain, but has since become one most customers are now familiar with.
The option became so popular that it is now listed under the “not so secret menu” category on In-N-Out’s website. As for what it entails, “animal style” refers to a burger with a beef patty grilled with mustard then served with pickles, lettuce, grilled onions, and extra spread on a toasted bun. Animal style fries, meanwhile, are topped with cheese, spread, and grilled onions.