I use a little bit of wood.Did you ever try mixing wood and bit to get more heat?
Mostly, to start a fire or if I let the coals die down too much.
I also use a piece every day or so to burn up the stuff that's not quite burned up to give me a more complete burn up of the stuff and give me a more powdery ash.
One of the things I've learned during this epic saga is that a hotter fire doesn't always make a warmer house.
I don't understand why.
I was able to get readings of 700-800 over the door and still froze in the house