Natto is a traditional Japanese food made by fermenting soy beans, which contains an abundance of vegetable proteins. Natto has a very strong, pungent flavor and is a very slimy paste. It is salty in flavor like, has a (blue) cheese type of smell and is usually eaten with rice. It is considered to be a very good all around, highly nutritional vegetarian food by the people who say it is has an ‘acquired taste’.