Knotweed crumble and custard

From the BBC Cornwall pages comes a novel way of dealing with this invasive species:

Harvesting and eating Japanese Knotweed could be the best biological way to control the "nightmare" weed, a woman in Cornwall has said.

Caroline Davey from St Buryan said the shoots of the plant, which taste like rhubarb, can be used in jams, chutneys, crumbles, pies and even cocktails.