The name came from Ryogoku Yagenbori (area near Ryogoku in Tokyo) where the seasoning was made, inspired by the Chinese herbal drug during the Edo period, and became a popular local specialty of Edo.
この名は、江戸時代に両国薬研堀で漢方薬からヒントを得て作られ江戸名物になったことに由来する。