To instantaneously obtain bread-producing dough in which hydration (=a perfectly mixed state) is completed and gluten is not formed, thereby enabling an ideal bread production in which a hydration process is separated from a kneading process, to instantaneously obtain noodle-producing dough in which hydration is completed and from which noodles can be produced just after the hydration, and to instantaneously obtain the bound product or mixture of a liquid raw material with a powder raw material such as a chemical or industrial raw material hating a stirring agitation or a long time treatment, without stirring and mixing the raw materials.

The powder raw material is spread and rotated with a developed blade 2 itself not having an action for propelling the powder raw material along the inner wall of an outer cylinder 1 so as not to stir and mix the powder raw material, and a liquid raw material is uniformly bound to the powder raw material, while dividing the bound product of the powder raw material to the liquid raw material from the non-bound products by an inertial classification action. In order to enable the operation, a fine particulate liquid raw material having such a size as not needing the movement of the raw material to other places after once bound is instantly added from the rotation shaft 12 side to the rotated powder raw material.