Not all recipes are provided on MasterChef. Before we discuss that, MasterChef is a cooking reality show which aired from July 02, 1990 to July 03, 2001 (British version) and was revived starting on February 21, 2005. The American version started airing on July 27, 2010 with Gordon Ramsay, Graham Elliot, Joe Bastianich, Christina Tosi and Aaron Sanchez as the judges. In MasterChef, contestants may bring in their own recipe for different challenges. Sometimes, the judges can also provide them their own recipe so they could recreate it.
However, during the mystery box challenge, the palate test (British), and the pressure test, they must create their own dish using only the ingredient/s provided by the judges. Anybody who fails to impress the judges will be eliminated from the show.