A method of manufacturing a freeze-dried block miso with an excellent flavor at a high productivity without increasing the amount of water added, which increases the drying cost, includes filling hydrated miso prepared by adding water to miso followed by mixing, into a molding container having a shape of an inverted frustum of a cone, with a narrow bottom portion and a wide opening at an upper portion, in which a plurality of grooves are formed in the inner circumferential side wall such as to run from the bottom portion to the upper portion, and chilling the container to harden the hydrated miso by chill, followed by freeze-drying.