Divery part 1):
Started the de-calcing process on our coffee filter machine while there was still coffee in it. Grabbed the jug out and poured its contents into a mug. Tasted the mug, tasted weird, almost sweet.
Poured all the coffee away.
Drank a lot of water and hoped that I hadn't ingested enough of whatever-it-was to make me ill.
Divery part 2)
I read the blurb on the bottle of de-calcing stuff, and there wasn't anything about what you should do if you swallow some, just about not getting it on your skin or breathing in the fumes.* After a bit my husband spotted that the blurb said it had citric acid in it, which didn't sound too bad. After a bit I plucked up the courage to google citric acid.
...
Citric acid is edible. It's the stuff you get in citrus fruits, obviously.
Panic over.
* this should have been a clue. Also I guess they wouldn't let you put anything really poisonous into a machine that makes something you are going to ingest...
Divery part 3)
I made my husband get chestnuts for the stuffing. I have now finished making the stuffing and have not used the chestnuts. I must have been looking at a different recipe at some point.
[EDIT] to add part 3.5: the chestnuts were in the recipe, just when I copied them from the web page to a piece of paper for ease of use, I missed them off the copy...