How about adding sawdust? It is created when you pressurize BARK, and oh yeah we should add BARK sawdust would be abbreviated sdst and bark well "BARK" bark is not created, it is simply an element, the reason I don't think sawdust should be made from wood is because it would probably interfere with saves
~T
And may I also add sawdust would be a very whitish and light colour of brown, bark would be a bit darker then wood but still acceptably light
Both bark and sawdust would be flamable, bark would be a solid and sawdust a powder, bark would burn a little longer than wood and sawdust would burn for 1 quarter the length of BCOL does.

Added

I added properties XD

Not exactly, BARK wouldn't burn nearly as long as coal, it would burn for about 2 seconds more than wood, sawdust would burn for about 6 seconds before deleting itself
But sawdust would be just as flameable as bcol same with bark

No, I mean BARK behaves like wood but it burns a bit longer... When it is pressurized it breaks into sawdust, which doesn't burn nearly as long as coal/bcol