Throughout the 19th century little parcels arrived at irregular intervals at London's dockyards from India.
They were addressed to people like Messrs Winsor and Newton. These artists' suppliers would take the raw material wrapped up in the packages and transform it into a workable paint. But today we can't say exactly what Indian Yellow was made from. It's no longer produced and the recipe has been lost.
Victoria Finlay, the author of Colour: Travels Through the Paintbox, took Jennifer Chevalier to Cornelissen's, one of London's oldest art shops, to investigate the story of yellow. 'Colour: Travels Through the Paintbox' by Victoria Finlay published by Sceptre; ISBN: 0340733284