Marukome Plus Koji Raw Salted Malt 400g / 500g Shio koji is made by combining rice malt, salt, and water, then fermenting and aging the mixture. It is a fermented seasoning that has been used on Japanese dining tables since ancient times. It has a rich, sweet, and umami taste derived from rice koji, so just by using it instead of salt in cooking, you can take your regular menu to the next level. It can be used to marinate and grill meat and fish for a moist and juicy finish, or to marinate vegetables for pickles.