Water spinach, ong-choi 蕹菜 or tûng-choi (通菜lit. hollow-vegetable) in Cantonese, is plentiful these days at wet markets. With its long, slender, hollow stems and arrowhead-shaped leaves you cannot miss it Water spinach is different than Chinese spinach (amaranth) or yihn-choi 莧菜.
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Bunches of water spinach
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