Tldr; Wet newspaper dipped in ashes.

So, the other day I had to clean out the fireplace, and ofc the fireplace window(glass) was rather dirty. Tried for a while to get rid of it with paper, then scrubbing it off with a one-time-use sponge etc… nothing gave any good results.

Then, I came across this random video online of a woman who said to use wet newspaper dipped in ashes from the stove, and start scrubing - This works like a charm! Forget all expensive chemicals and soaps to do this job, just KISS! Keep-it-simple-stupid.

Please give this a go next time you have to clean your wood-burning stove.