The Natto Bowl: Why a Grooved Bowl With a Spout Beats Stirring in the Tub
A natto bowl is a mixing tool, not a serving dish. Buy one with fine grooves inside, something to brace against while you stir (a handle or a thumb rest), and a lip or spout that can reach into an ordinary 11–12 cm rice bowl. If a bowl has all three, it does the job….