Yixing teapots are meant for use with black and oolong teas, as well as aged pǔ’ěr tea. They can also be used for green or white tea, but the water must be allowed to cool to around 85 °C (185 °F) before pouring the water into the pot. Yixing teapots absorb a tiny amount of tea into the pot during brewing. After prolonged use, the pot will develop a coating that retains the flavour and colour of the tea. It is for this reason that soap should not be used to clean Yixing teapots. Instead, it should be rinsed with fresh water and allowed to air-dry. A studious tea connoisseur will only steep one type of tea in a particular pot, so as not to corrupt the flavour that has been absorbed. Yixing teapots are smaller than their western counterparts as the tea is often brewed for only a few seconds before it is served to guests.[citation needed] Reusing the same tea leaves multiple times, the first brew of the tea leaf is usually used only to clean tea, teapot, and cups and is not to be consumed. Chinese people traditionally drink from cups that hold less than 30 ml of liquid and are simply repeatedly filled so that they may cool rapidly but can be ingested before the tea becomes cold.