The Taste is back again this week with Nigella and the gang. Last week, it made a bit of a star of Irish cook Barry Johnston, who told Nigella to take a hike, as he'd rather work with judge Anthony Bourdain. Okay, we may exaggerate slightly, but he did turn the lovely lady down. He may just be the only Irish male who would. This week, the mentors work with their chefs as they are set the challenge of making the best prawn cocktail. Sure that's - what - ketchup, mayo and a few prawns? All OVER it.