Sugimaru Bussan Arrowroot Kuzu 4 bags Made with genuine kuzu produced in Southern Kyushu. Hokkaido grown potato starch is used. Kuzu has been familiar to Japanese people since ancient times as an ingredient for high-class Japanese sweets because of its texture. Recently, it has been attracting attention not only as a dessert but also as a nutritional supplement because of its high digestibility. Simply pour boiling water over the kuzu to make this easy and delicious Japanese dessert.