Zosui is the personification of the Japanese practice of Mottainai – waste nothing! This is an especially favorite way of using up the stock left over from Nabe (Hotpot), because after all the meat and vegetables are gone, what’s left behind is a gloriously flavour broth that has been “created” with everything that was cooked in it previously. So as a final course to a Nabe meal, adding rice or even udon, is the perfect way to go.