Overview:It is the second week of heats and eight more hopefuls try to prove to judges John Torode and Gregg Wallace that they have the potential to be the 2017 MasterChef Champion. This year sees the introduction of the all-new MasterChef market - which is stocked with produce from all around the world, as well as a selection of meat and fish. The first challenge for the eight contestants is to invent and cook one dish using what's available to them in the market.