It's the last quarter-final, with this week's most talented four cooks returning to fight for a place in Knockout Week. They face a single intense challenge. They must cook two courses that will excite not just John and Gregg but also some of MasterChef's most inspiring winners, finalists and contestants, who have all gone on to careers in the food industry.Their fate is in the hands of two MasterChef champions, 2014's Ping Coombes and 2015's Simon Wood, and one of the finalists from 2020, Claire Fyfe.With just two Knockout Week places up for grabs, these amateurs need to show real flair and ambition to edge closer to the MasterChef 2023 trophy.