A letter campaign to Australia's top chefs -- including Kylie Kwong, Maggie Beer, Stephanie Alexander, Stefano de Pieri and Margaret Fulton -- has again raised questions about the CSIRO's alliances with industry.

In copies of a letter forwarded to Crikey, Deputy Chief of the Commonwealth Scientific and Industrial Research Organisation (CSIRO) Plant Industry, TJ Higgins, has written to more than 50 chefs who signed Greenpeace’s GM-free Chefs Charter, asking them not to boycott Genetically Modified products.