The unglazed exterior makes this gaiwan unexpectedly comfortable to hold. The right accessory to serve fine teas in. This gaiwan holds 0.8 dl.
Gaiwan is a traditional Chinese teacup. In China, it is an everyday object in three parts: saucer, cup and lid. (The name means roughly 'bowl with lid'). Tea leaves are placed directly in the cup, water is poured in and allowed to steep briefly under the lid. You drink by straining/pushing away the tea leaves with the lid.
In many parts of China, gaiwan is mainly used for brewing tea, especially for oolong or pu'er. Then you brew with relatively many tea leaves, but for a short time. The advantage over a small pot is that a gaiwan can be emptied quickly. This means that you can get a more accurate brewing time.
When serving in a gaiwan, it is mainly used when serving green tea.