Round, tightly packed heads of pale green leaves, crisp and sweet. The everyday stir-fry vegetable: torn by hand and fried hot with dried chili and vinegar (手撕包菜), or cooked in dry pots with pork.
卷 (to roll/curl) + 心 (heart/center) + 菜 (vegetable) - a vegetable that rolls up around its center. The name perfectly describes how cabbage leaves wrap around the core.