I’ve been holding these for two years, and I used a weird brewing process today (3 of these in a 32 oz teapot, three infusions) so this review might not generalize well. I rinsed these twice before brewing.
Musky and soil-like, with some coffee overtones and a hint of dark chocolate. The aftertaste is mild, with more dirt and a faint hint of caramel. Noticeably bitter, but at the same time it does have some of the pu-erh sweetness. As it sits and cools (or maybe as I get used to it,) the bitterness is subsiding and the sweetness is becoming more pronounced.
I’ve been experimenting with different brew settings for some time; today’s experiment was good but not the best. Similar settings once yielded a wonderful dark chocolate flavor — one the best pu-erh experiences I’ve had — but I haven’t been able to repeat it.