The week's best amateurs are put through the mill with a seriously daunting test - the critic's brief. The home cooks have to impress just one food critic with two dishes. They are given the critic's brief and must create a main and a pudding based on it. The brief has been set by the candid food critic and ex-chef Charles Campion, who asks them to cook a main based on the following instructions: 'I am looking for a cook who can successfully make either a classic British dish or a genuine Indian one. Someone who can do simple dishes well, without over-elaborate presentation.' After cooking their savoury dish based on this brief, but without knowing who has set it, the contestants are finally introduced to their critic and must stand before them with their dish. Face to face, they will hear exactly what Charles Campion, as well as John and Gregg, thinks of the main and how well they have kept to the brief. After this searing honesty, the quarter-finalists must return to the kitchen and prepare a dessert that fulfills Charles' brief: 'One should be overwhelmed by a good pud!' At the end of tonight's quarter-final, three cooks will go through to Knockout Week, taking another step closer to being crowned MasterChef Champion 2015. For one, their MasterChef dream will be over.