Where it began: Root beer originated in the 19th century as a medicinal, non-alcoholic drink made from roots and herbs like sassafras and wintergreen. Float invention: The root beer float, or 'Black ...

In-N-Out burger, fries, and a drink - Walter Cicchetti/Shutterstock These days, secret menu items have become just as popular as standard menu items at many fast-casual and fast food restaurants. You ...