Soybeans, natto, "Itohiki-natto" (fermented whole soybean) Soybeans, natto, "Hikiwari-natto" (fermented dehulled and split soybean) Soybeans, natto, "Goto-natto" (natto fermented with rice-koji and salt) Soybeans, natto, "Tera-natto" (koji-molded, salted, steamed soybeans)