During the period when making a fire using tools such as a match was not easy, the fire of the Irori fireplace was always kept lit so that it could be used for making a fire for the Kamado or lighting.
マッチなどによる着火が容易でない時代、囲炉裏の火は絶やされることなく、竈（かまど）や照明具の火種として使われた。