Is the patty pink slime or real beef? Is the bun loaded with more than just belly-ballooning empty carbs? Whether you’re ordering from McDonald’s or Burger King, fast food hamburgers have a distinct, addicting quality. For decades, many people have wondered what goes on behind the curtains of these patty-prepping assembly lines. What do they put into burgers that makes them so juicy and irresistibly good?
While most fast food chains state that they use 100 percent beef, there are many more components to the burger than meets the eye. From the way the meat is treated to the ingredients in the sauce, toppings, and bread, there’s so much more lurking in your bun than you imagined. Read on to find out what exactly goes into your fast food hamburgers. Then, scroll through the 40 Most Iconic Fast Food Meals of All Time.