Beef has hit record highs, pushing up prices for burgers and steaks at fast food chains and restaurants already struggling ...

But what else is different? CNNMoney teamed up with Eurofins Laboratories to find out what exactly is in your favorite burgers. How healthy is your favorite burger? From high-end to the dollar ...

And they are demanding more for their money, higher-quality fast food, and greater variety than can be found at titans such as Burger King, KFC, and McDonald's. (Check our buying guide and Ratings ...