In 1685, during the Edo period (in the reign of Shogun Ietsuna TOKUGAWA), Tarozaemon MINO, a lord of the Japanese-style inn "Minoya," located in what is now Fushimi Ward, Kyoto Prefecture, found that the tokoroten (gelidium jelly), which he had once thrown outside of his house, had become a dried foodstuff after having frozen and melted repeatedly for several nights and days.
江戸時代（徳川家綱の時代）1685年に現在の京都府伏見区において、旅館『美濃屋』の主人・美濃太郎左衛門が戸外に捨てたところてんが凍結し、日中は融け、日を経た乾物を発見した。