Natto Share definition Flag Nattō is a traditional Japanese food made from soybeans that have been fermented with Bacillus subtilis var. natto Billy: Hey you want to try some Natto? Roxanne: Nah, that slimy stuff makes me want to puke Natto by Jumbled McGobbledygook December 26, 2020 0 0 Get merch Get the Natto mug. Buy Now — $32.95 See more merch