Overview: The contest reaches the semi-final stage. After four weeks of competition, only the ten most gifted chefs remain. Tonight, for the first time, they all meet in the MasterChef kitchen, where they are set the challenge of producing a dish based around their favourite food memory. The group of ten will be split into two groups of five for the cooking, but they will ultimately all be cooking off against each other in the biggest challenge of the competition so far. They need to wow the three judges with a knockout dish that exemplifies the way in which food can remind you of wonderful times. The chefs have one hour and 15 minutes to prepare their cherished dish, after which the five strongest chefs of the day will go straight through to the next semi-final round.