Daitokuji Nattō (大徳寺納豆, Kyoto salt-fermented soybeans)

Daitokuji nattō looks like a warning: black, wrinkled beans, salty enough that you eat them by twos and threes. Then you taste one with rice and understand the old trick. It is miso's stern cousin, not sticky nattō, and it does its work in a whisper because salt and time have concentrated everything.

The work is long, not clever. First make mame-kōji, soybean kōji, by letting Aspergillus oryzae bloom cleanly over cooked soybeans. Then salt it so the wrong life cannot take hold, and dry it slowly until each bean turns dark and glossy. The detail that decides it is the kōji stage: a clean white bloom and a warm nutty smell before salt ever touches the beans. Miss that, and months of patience won't repair the foundation.

This belongs to the side of the Japanese meal that teaches restraint. A few beans beside rice, ochazuke, tea, or sake are enough; chop one into a dressing and it seasons like old miso. Leave it room on the plate. A condiment this severe looks foolish in a heap, and it will tell you so with the first bite.