by Nanette Geller I was planning to serve nattō tomorrow for nattō day, but since it’s already 7/10 in Japan I decided to go ahead and make nattō Soba for dinner. We both love soba, and cold nattō soba is one of our favorites.     Cold soba and broth topped with nattō, okra, grated daikon, finely sliced green onion, and finely julienned shiso. The nattō is lightly chopped. Grated ginger, grated