A kyusu, the traditional Japanese teapot, is best cleaned using only water or warm water. Avoid detergent in daily care, and always dry the teapot completely before storing it.
With continued use, especially for Tokoname ware, a kyusu gradually develops a deeper color and a soft, natural luster that enhances its character. Because of their distinctive shapes and fine parts, teapots can be delicate. If handled carelessly during washing, the spout or handle may easily be bumped or damaged.
Hold It Properly
The most common accident occurs when the spout or handle strikes the sink during washing. To prevent this, hold the handle firmly with one hand and position the kyusu so the spout faces toward you. This posture helps protect the teapot’s most fragile parts while rinsing.
Rinse Thoroughly
Rinse the interior under running water, directing water through the spout to flush out any remaining tea leaves from the internal strainer.
Most kyusu teapots are fitted with very fine mesh strainers. Be sure to remove all tea leaves to prevent clogging and to keep the teapot clean and hygienic.
Use a Brush
If tea leaves are caught in the strainer or spout, a small kitchen brush or a clean toothbrush can gently dislodge them without damaging the surface.
Dry Thoroughly
Drying is the most important step in caring for a kyusu. Due to its shape, water can easily collect inside the body or spout. If moisture is left behind, it may affect the tea's flavor and aroma and could lead to mold or bacterial growth.
After rinsing, separate the kyusu body, lid, strainer, and tea filter (if removable), and dry each part individually. To help moisture evaporate from hard-to-reach areas such as the spout and base, place the main body upside down while drying.
Is a Kyusu Dishwasher Safe? What About Detergent?
Although many ceramic and porcelain items are dishwasher safe, we do not recommend washing kyusu teapots in a dishwasher. The vibration and high heat can cause damage, and decorative finishes—especially red-painted details—may fade over time.
At MUSUBI KILN, our products are crafted to be enjoyed for years to come. If there is any risk that dishwasher use could affect a product’s appearance or function, we clearly note that it is not dishwasher safe.
For everyday care, rinsing your kyusu thoroughly under running water is usually sufficient, and detergent is not necessary.
If you are concerned about tea stains, pour boiling water into the teapot, add 1–2 spoonfuls of baking soda, and let it sit. Once the water has cooled, gently scrub with a soft sponge to help lift stains.
Japanese teapots come in a wide range of shapes and sizes. Some are ideal for casual daily tea with family, while others are designed for slow, deliberate brewing—much like a barista’s handcrafted coffee.
For further reading, please see the MUSUBI Journal blog post: How to Clean a Japanese Teapot