This sieve is specially designed for breaking up clumps in matcha. It makes doing so quick and easy. Clumps tend to form naturally in matcha powder due to static electricity, moisture, and the powder’s own weight when it is left to sit for long periods of time. Once clumps have formed, the matcha can no longer be whisked properly and the taste is not as smooth. This item is specially designed to prevent that by sifting matcha powder and breaking up clumps. Made in a convenient small size, it can be used to sift matcha in advance before a tea ceremony, or used at home.