Frankincense Tree Resin
Absolutely the oldest kind of incense and in exactly the same form as used by the three wise men two thousand years ago.
In fact the use of tree resin as an aromatic substance can be traced back much further - over six thousand years. You can literally recreate ancient aromatic history in your own home.
The smoky fragrance produced by burning resin on charcoal disks is quite unique and amazingly evocative.