How to clean glass door on fireplace ?

[Spoiler]

we got a fireplace with a glass door, the glass door gets all sooted up . . .

What are you burning in it? Wood the groundsman has just chopped down from the copse in your manor? Need to season it for 18 months or so first . . .

Or use a decent coal - I like homefire - pretty shape!

[Chugnut]

scrunch up a bit of newspaper then dampen it (you can just spit on it, but vinegar does work well). You could use a damp cloth but damp newpsaper does a perfectly good job.
dip it in the woodash (NOT coal ash) and then rub the glass.

clean off with a damp cloth.

The textbook approach as recommeded by Clearview installers.

[cojak]

I've found brasso/duraglit works well

[threaded]

I don't bother and it sort of comes and goes. Think it comes down to the type of wood I'm burning.