Semi-finals week reaches its crescendo as the remaining five cooks go head-to-head, with just one challenge to overcome to win them a place in the coveted MasterChef finals.Imaginations run wild as the contestants' brief is to cook a dish that is both ‘theatrical and fantastical'. The hopefuls need to create a dish that pushes boundaries, playing with both mind and senses.At the end, judges John Torode and Gregg Wallace are faced with their toughest decision so far. Who has what it takes to go through to finals week and be in with a shot of becoming MasterChef Champion 2023?