In Koshigaya City which is the biggest producer of arrowhead in the Prefecture, a local research association has produced the world's first beer using arrowhead tubers and they are making an effort to spread the consumption of arrowhead tubers.
県内最大の生産地である越谷市では地元の研究会がクワイを使った地ビールを世界で初めて作るなどクワイの普及活動に努めている。