Plot: The hosts visit some of the biggest food production units in Britain and share details about the various processes that take place inside these factories.
Plot: The four best chefs from this week's heats return for their quarter-final, where they face two more demanding challenges set by Monica Galetti and Marcus Wareing. First, the chefs face an invention test inspired by the seaside. They are presented with a choice of fish, shellfish and a selection of...