PROBLEM TO BE SOLVED: To provide softened mushroom, in which an original shape of mushroom can be maintained and has softness capable of being crushed by a tongue, in not only mushroom which is sliced or cut, but also mushroom from which a ferrule is removed or grip is cut and which has an umbrella-shape, or mushroom from which the ferrule or grip is not removed and which has whole shape.SOLUTION: The softened mushroom having softness capable of being crushed by a tongue, while maintaining an original shape of mushroom, is produced by a method including following steps described in steps A, B. The step A is a step for bringing mushroom into contact with a solution including acid, and heating, and the step B is a step for processing the mushroom which was subjected to the step A with enzyme.SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT【課題】スライスしたキノコや刻んだキノコのみならず、石突きを取った状態または柄をカットして傘だけとした状態や、石突きや柄を除去しないキノコまるごとの状態でも、本来のキノコの形状を保ったままであり、かつ、舌でつぶせる軟らかさを有する軟質化キノコの提供を課題とする。【解決手段】次のA、Bに記載の工程を含む方法によって、本来のキノコの形状を保持したままであり、かつ、舌でつぶせる軟らかさを有する軟質化キノコを製造する。A.酸を含む溶液とキノコを接触させ、加熱する工程B.Aの工程を経たキノコを酵素で処理する工程【選択図】なし