Practice JLPTMeaning
空芯菜 (くうしんさい, kūshinsai) is water spinach — a Japanese food.
What is water spinach?
Kūshinsai (空芯菜 or 空心菜, Ipomoea aquatica ), in English known as "water spinach", has countless local names in Southeast Asia. While kūshinsai is cultivated for its edible stems, it is closely related to sweet potatos, which also belong to the morning glory plant family. It is very popular in stir-fry dishes. The term "ヨウサイ" also refers to water spinach.