The present inventors found that the natural flavor intrinsic to soybean is retained more than ever before when soybean is processed to prepare a processed soybean material having a specific lipid content, a dietary fiber content, an acid-soluble component content and a protein content, whereby the present problems were solved. The controller is directly or indirectly responsive to a reload feedback signal, which signal is generated in response to changes in output reload performance of the development process. The pin body has a tubular body with an axial bore therethrough, and comprises a connecting end with an engagement section.