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LONDON - OCTOBER 23: A piece of toast with a portrait of former British prime minister Margaret Thatcher sits on display during the Marmart exhibition at the Air Gallery on October 23, 2006 in London, England. Artist Dermot Flynn has produced a series of portraits using toasted bread and Marmite. Visitors are also encouraged to to use toast as a canvas and create their own works at the gallery. Marmite is a British savoury spread made from yeast extract, traditionally eaten as a spread on bread, toast, and savoury biscuits.
