Panel one - Viscum album, the oil of the mistletoe. It's been worked into the wood like a varnish!
Panel two - You know, it's probably infested with nargles.
Panel three - *blank stares*
Sooo... That doesn't sound right... Would nargles infest something that's been rubbed with the oil of mistletoe, and not actually made from mistletoe? If only I had Luna to ask...