Extraordinarily fine shoyu made of Non-GMO organic soybeans and organic wheat by brew masters skilled in traditional methods. Aged in wood casks for 2 years. It melds, brightens, and brings out depth of character in any food. George Ohsawa called this soy sauce 'tamari'. Shoyu soy sauce is macrobiotic 'tamari' soy sauce. 55 gallon steel, food grade drum.