One cup, or the whole afternoon. Your call. Fermented tea is more than puer. Taste four dark teas from different regions: Anhui Liu An, Fu Brick, 2015 Gaoma Bailiang, and 20-year Duotelli Liu Bao.

Free tasting at 4Seas Nimman, 1st floor, out the back on the terrace. Come any time before 4 pm. No lecture or ceremony, and no need to stay until the end. Bring some food to share and water if you get thirsty; please don’t bring tea.