Sometimes, the best items at a fast food chain are the ones you don't see listed on the menu. From creative McDonald's burger mashups that combine two fan favorites to Chipotle's quesarito hack, fast ...

In-N-Out may appear to have a simplistic menu, but hardcore fans know all about the not-so-secret menu hacks that can elevate the fast food burger. Secret menu items include animal-style burgers, an ...