Has anyone found a place to get seeds for You Mai Cai? I have seen the green leafy vegetable only once here in the States, and it was called "Taiwan Lettuce" at that store.
Oh we usually call them by their slang or nickname "AA Choi" They are available in many chinese supermarkets and many times in smaller vegetable markets. The larger chinese supermarkets will usually have a seed rack that would most likely contain seeds for this vegetable.