A hill station with the atmosphere of a post-Armageddon Hanging Gardens of Babylon, Tam Dao is one big vegetable garden. Hanoians come here to escape the breathless heat of mid-summer, sample the local cuisine of exotic and endangered forest animals and get their fill of a leafy vine that, if they stood still for long enough, would slowly entwine and strangle them.
All townsfolk appear to derive some income from this green creeper with even the kids picking at its leaves and stripping it of its tough tendrils. Sold by the kilo in bunches, it is either steamed or stir-fried with garlic and soy sauce. In Vietnamese, it is known as su su.
Does anyone have any idea what it might be called in English?