Wikipedia Article About Brown rice miso on Wikipedia Nice and strong miso with subtile flavour. Ideal for miso soup. Brown rice miso is made from organic soybeans and brown rice and has been fermented for more than 1 year (up to 18 months) in wooden (cedar) drums. During this fermentation subtle flavours are formed. Rice miso can be used in soups, sauces, dressings, spreads, fish and vegetable dishes.