yixing cups

[jogrebe]

Does anybody have experience with unlined yixing cups? If so what are you thoughts of them and do they have to be dedicated to a single type of tea like yixing pots or can they tolerate cross use without having a negative effect on the tea inside?

[MarshalN]

Honestly, I think any effect will be minimal and most likely, you won't notice anything.

The one issue with these cups is that you can't tell what colour your tea is.