what is natto food
Natto is a traditional Japanese food of fermented soy beans. Natto soy beans are steam cooked and then fermented with a healthy bacteria known as Bacillus subtilis.The fermentation process yields a food that is high in nutrition and protein. At first glance, natto appears to be light to dark brown in color, with beans that are quite small.atto soy beans are steam cooked and then fermented with a healthy bacteria known as Bacillus subtilis. The fermentation process yields a food that is high in nutrition and protein.