Growing Yacon, Chufa Nuts and Tall Purslane (collect those purslane seeds from the wild & spread them in your own yard). Other mentions in this video: purslane reseeds to plant it once & you'll never have to again. It will pop up in other places. Simply move it if you don't want it there...it's hardy & will handle the relocation easily. They said in the vid that the tall purslane tastes better than the prostrate (low growing creeper) variety.