Wood is kiln-dried to get a 20% moisture content or lower. When it’s too damp, it burns less, fizzles out quicker, and emits a pesky and smoky flame. Our kiln drying process involves heat-treating the wood at 175-degrees for 75 minutes to get your Mini Oak Firewood to that 20% or less moisture goal. Drier wood means quicker ignition and a longer, brighter burn.