From: Modern Farmer
Ever shopped at a Chinese market and seen a strange, rough-skinned root-looking vegetable with a few weak leaves of lettuce on top? That’s celtuce, and you should make friends with it.
Celtuce goes by many names, some of which contain the word “lettuce,” which makes sense, as it is indeed a varietal of lettuce. You might see it advertised as “stem lettuce,” “asparagus lettuce,” or “celery lettuce,” or, at Chinese grocery stores, as wosun.
Shopping at Chinese grocery stores can be intimidating at first; many fruits, vegetables, and greens are not popular in other cuisines, and some require that the cook understand how to prepare them. (Many are bitter, for example, but to know which are supposed to be bitter and which should be blanched or braised or fried to reduce bitterness can take time and patience.)
Celtuce is not one of these; it is one of the easiest and tastiest vegetables to use that you’ll find anywhere. Non-Chinese chefs have begun using it more and more in the past five or ten years, without ever moving celtuce into bonkers-trendy territory where Brussels sprouts, beets, and kale reside these days. Dan Barber of Blue Hill in New York uses it; April Bloomfield once called it “the most underrated vegetable” and “totally amazing”; and Josiah Citrin of Los Angeles’s Melisse Restaurant regularly showcases it on his menu.