Crowds gather for lettuce-chopping spectacular20.06.2008 American artist Alison Knowles first made a salad in the name of art at London’s ICA Gallery in 1962. Make a Salad is what the Flux artists termed an ‘event score’: a written instruction that can be acted out and changed according to the context in which it is performed. In Tate Modern's giant Turbine Hall, Knowles has given the work a mammoth new dimension. TateShots followed her as she went on a huge salad shopping spree then, with the help of a team of chefs, prepared a meal for hundreds of visitors to the gallery's Long Weekend festival.