All in This Tea (2007)

All in This Tea is a 2007 documentary film co-directed by Les Blank and Gina Leibrecht, about Chinese tea. It follows the American tea connoisseur David Lee Hoffman as he travels to remote tea-growing areas of China. Hoffman attempts to interest Chinese tea growers and distributors in fair trade issues, and explores the importance of terroir and organic growing methods in both the quality and future sustainability of the Chinese tea market.

More at Wikipedia.