Teaware should be cleaned after every use. After you have disposed of the tea leaves, rinse the teaware in boiling water. Hot water sanitizes the teaware and helps it dry faster. Afterwards, dry the teaware with a clean tea towel for storage. You can also use mild dish soap on porcelain and glass teaware while washing, but never on clayware; instead, use only hot water and a soft towel to clean clayware. Materials such as the soft side of the sponge or a soft towel should be used to clean the teaware; avoid rough or harsh materials.For stubborn tea stains on porcelain or glass, submerge your teaware in a bowl or container with warm water. Add 15g (1 tbsp) each of citric acid and baking soda for every liter of water. Let the teaware sit in the mixture as it bubbles for a few minutes. After a few minutes, wipe the teaware with a soft sponge to remove any remaining stains. Then, rinse the teaware with soap and water, and dry. If the teaware is still stained after this process, you can continue to soak the teaware in the mixture for a few hours. Do not apply this process to clayware! For tea stains on clayware, simply rub the stains with a damp, soft towel.