http://eattheinvaders.org/japanese-knotweed/
Related to rhubarb, it’s very sour and may act as a laxative the way rhubarb does, so use it sparingly at first.
Also http://www.theotherandyhamilton.com/2013/04/22/cooking-with-japanese-knotweed/
@Charlie_L started
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http://eattheinvaders.org/japanese-knotweed/
Also http://www.theotherandyhamilton.com/2013/04/22/cooking-with-japanese-knotweed/