Heat three continues with the four remaining celebrities facing three more culinary challenges as they compete for a place in the quarter-final.Tonight's first challenge is a Knowledge and Skills Test, where the celebrities have the terrifying task of facing judges John Torode and Gregg Wallace one on one. They must attempt to demonstrate their ability to make crêpe Suzette in just 20 minutes.Up until this point, the celebrities have been cooking food as they would at home, but to show them what restaurant cooking is all about, John and Gregg have invited in a professional chef. Originally from Calcutta, now the owner and head chef of the critically acclaimed Darjeeling Express in central London, Asma Khan challenges each of the four celebrities to cook one of her recipes.Then it's crunch time as there is just one more chance for the four celebrities to earn themselves a place in the quarter-final. Their brief to stay in the competition is to cook one dish in which vegetables are the hero. With just one hour to cook, and only three quarter-final places up for grabs, the celebrities give it their all in a final attempt to prove themselves to the judges. At the end of this test, one of them will be going home.