Fine Chinese green tea with an astringent taste made from long rolled and twisted leaves?

You're likely describing Dragon Well (Longjing) tea.

Here's why:

* Fine Chinese Green Tea: Dragon Well is a highly regarded green tea from China.

* Astringent Taste: Green teas are known for their astringent quality, which is a slightly bitter, puckering sensation on the tongue.

* Long Rolled and Twisted Leaves: Dragon Well leaves are known for their flat, long, and slightly twisted shape. This is a result of the traditional rolling process.

Other possibilities:

While Dragon Well is the most likely candidate, there are other Chinese green teas with similar characteristics:

* West Lake Longjing: Similar to Dragon Well but from a different region.

* Bi Luo Chun: Also known as "Snail Spring," these leaves are tightly rolled and look like small, green snails.

If you're looking for more specific details about the tea you have in mind, please provide:

* Where did you purchase the tea?

* Any other information on the packaging?

* What does the tea smell like?

With more information, I can help you identify the specific tea.