PROBLEM TO BE SOLVED: To provide a manufacturing method whereby a softened food soft enough to be crushable with the tongue and the gums and to be eatable without being bitten by the teeth while maintaining its original shape and from which bitterness derived from an enzyme agent has been removed can be easily manufactured without use of a dedicated device.SOLUTION: A method of manufacturing a softened food being soft enough while maintaining its original shape and from which bitterness derived from an enzyme agent has been removed includes an enzyme treatment process for dipping food ingredients in an enzyme agent solution containing an enzyme at an enzyme concentration of 0.005% (w/v) or more and a heat treatment process for heating the enzyme-treated food ingredients with hot water.