This tea isn't what I was expecting from a "heavy roast" tea. The 2016 #20 charcoal roast oolong has a very upfront charcoal note until its spent some time resting in clay with some oxygen. Even then it takes a steep or two to bring out the real stonefruit flavors. Until well rested it can be described as scratchy in the throat.
Right out of the packet heavy roast dong ding one is delicious with clarity of flavors. You have a sweetness and a creaminess along side what I'd describe as a "roast" flavor that is some combination of leather/tobacco notes. It's very very good. I get no cigar or ashiness I was worried about in a heavily roasted tea.
The later steeps I find the flavors begin to muddle a bit and there is a noticeable almost grainy texture I have a feeling is caused by the roast. Based on experience with similar teas I think this may smooth out over time.