Overview: Six more amateur cooks compete for a place in tomorrow's quarter-final, preparing a plate of food that represents who they are as their Calling Card and choosing one box of ingredients - either sweet or savoury - to rustle up a surprise dish in the Invention Test, before two of the hopefuls are sent home. The remaining four serve dinner for 2011 and 2013 MasterChef champions Tim Anderson and Natalie Coleman, as well as 2010 finalist Tim Kinnaird, before judges John Torode and Gregg Wallace decide who has made it through