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You are absolutely right, this is what people call water spinach or water spinach. But in my country we are used to calling it kangkung

I thought you guys would call it rumpuen? because Indonesian calls it kangkung and that honestly translates to water spinach. Never heard any of them calls them Kale either

Sorry for mistyping the reply to your comment above.

We usually call it kangkung and in the local language it's called rumpuen.