DU LIANYI/CHINA DAILY A worker uses kale to make cakes at a workshop in Gaomi, Shandong province. ZHAO RUIXUE/CHINA DAILY Farmers pick kale in Gaomi in May. ZHANG TAO/FOR CHINA DAILY Farmers ...

Once thought of as inedible, demand for kale now makes it highly sought after. Gaomi county in Shandong province began cultivating kale in 2005. After years of trial and error, farmers succeeded ...