I have been to Sunset Supermarket, New May Wah and various spots in Chinatown but cannot find it anywhere. It's an ingredient used in Fuschia Dunlop's latest cookbook. I can find lots of other preserved vegetables including zha cai and Tianjin. No one in any of the stores has been able to help, at New May Wah they said restaurants request it but they haven't carried it in years. Has anyone bought it or seen it locally?