My relatives’ ceramic studio recently hosted a miso-making party. The process is both simple and also time-consuming. First the soy beans are soaked in water. We started with 11 kilos of beans, and about 12 people who mashed and combined the ingredients by hand.
The beans are then cooked in a pressure cooker. We had three pots going at once.
The beans are then mashed by hand. In the upper left hand of the photo above is a mortar and pestle; the wooden pestle is made from Sansho, the Japanese pepper tree (Zanthoxylum piperitum).
More photos about miso making after the jump