If it doesn’t form a paste, that’s because the hot water you use is not boiling. When brewing, be sure to use freshly boiled water so that it can become a paste in one go. At the beginning, First put the kudzu powder in a bowl "Add it according to your needs", then add a little cold water to dilute the powder. Be sure to crush the powder with a spoon, otherwise there will be particles when brewing. 〈Don’t add too much cold water, add water according to the amount of powder〉, then just rinse it with freshly boiled water, and then stir it with a spoon. This is how the kudzu powder I bring at home is filled, I hope it can help you.