Overview:It's the last quarter-final of the heats and the six talented heat winners have no time to rest on their laurels as they continue to fight for their place in the competition and a place in knockout week. The week's best amateurs are put through the mill with a daunting test set by one of Britain's toughest food critics, Jay Rayner. He challenges the amateur cooks to make an exceptional dish centred on one ingredient, duck breast. After cooking their dish based on the brief, the contestants must stand before Jay Rayner and John and Gregg, and hear what they think of their dish and how well they have kept to the brief. At the end of tonight's quarter-final, the best cooks will go through to knockout week, taking another step closer to being crowned MasterChef Champion 2016.