In addition, although the technique of pasteurization itself had been used since the Middle Ages, it was after this period when putrefaction, which occurred when pasteurization was not done, became to be called hiochi and the bacteria which caused it came to be called hiochi bacteria.
また、火入れの技法そのものは中古からあったものの、それを施さなかったときに起こる腐造のことを火落ち、あるいはそれを起こす菌を火落ち菌と呼ぶようになったのは、このころ以降のことである。