This recipe video shows you how to easily make chewy and gooey warabi mochi using potato starch by simply mixing and chilling the ingredients. In addition to the basic plain flavor, we introduce two other flavors: a fragrant hojicha (roasted green tea) flavor. Put the ingredients in a pot and stir continuously over low to medium heat. Once it thickens, transfer it to a storage container and chill in the refrigerator. Top with kinako (roasted soybean flour) and kuromitsu (brown sugar syrup) to complete a delicious, cool Japanese sweet. The key is to keep stirring thoroughly, as it will harden very quickly if you're not careful. You can also adjust the elasticity by changing the chilling time, so you can find your preferred firmness. This is an easy and delicious sweet that is perfect for a home cafe or for entertaining guests.