In-N-Out Burger's Animal Style is a secret menu item that adds a flavorful twist to their classic burgers. The secret recipe involves grilling the patty with mustard, adding extra pickles, grilled onions, and a special sauce. The exact ingredients and proportions of the special sauce are known only to In-N-Out Burger. Animal Style has become a cult favorite among In-N-Out fans, adding a deliciously tangy and savory flavor to their burgers.
