Taylor Farms, the world’s largest supplier of ‘healthy, wholesome’ cut vegetables and salad, denies claims it threatened to call immigration officials to keep workers on ‘temporary’ status, exposing them to dangerous working conditionsA lot of America’s healthy eating options pass through two cream-coloured, windowless buildings in a scruffy California town called Tracy.Here Taylor Farms, the world’s largest supplier of cut vegetables and salad, packages produce which ends up at Safeway, Walmart and Costco, as well as McDonald’s, Chipotle, Subway and Starbucks.