Matcha residue dries into a stubborn film, so rinse your whisk and bowl right after use. Warm water and a gentle scrub is all it takes. For a bamboo whisk, don't soak it—just rinse and let it dry upright. A metal whisk or frother can go in the dishwasher, but hand-washing keeps the finish longer.

If you've used a thermos, give it a quick rinse with hot water and a drop of dish soap. Let it air-dry upside down to prevent mildew. That five-minute ritual saves you from a funky smell tomorrow.