Dig a hole in the center of the mixture and add the shiitake, kombu and chili pepper. Cover with the mixture and flatten the surface by hand to eliminate any air pockets. Add some scrap vegetables following the same procedure as the previous step. It can be anything, including scraps, since these vegetables are just to help the bacteria establish a healthy colony. Store the nukadoko at room temperature (about 70F is ideal) and out of direct sunlight.
STORAGE. Most nukazuke will last for up to one week if handled properly and kept refrigerated until you are ready to eat them. Always wash your hands before removing them from the container to avoid contaminating the container and increasing the risk of spoilage.
SERVING. How thick or thin to cut the nukazuke will depend on the initial size and shape of the vegetable used. As a general rule, the pieces should be bite-sized so that they can be easily eaten with hashi (chopsticks).