The Fast Food Burger Chain That Changed The Drive-Thru Forever - Chowhound

EAKARAT BUANOI/Shutterstock Beyond its delicious burgers and fries, In-N-Out is beloved for its under-the-radar offerings. Like several other major fast food chains, In-N-Out has a variety of secret menu items, perhaps the most famous being the Flying Dutchman. There are even fake secret menu items that customers have tried time and time again to order. However, perhaps the best kept secret of the burger spot…