Conversation with my mother:
Me: “So the sister burnt some sugar the other night while preparing some candied orange peels. How can I get the burnt sticky mess out of the pot?”
The Mom: “Honesly, google it!”
Me: “Oh….I thought you’d have an idea. Maybe Grandma will know”.
Googling this did give the suggestion of boiling hydrogen peroxide (aside: which is an extremely dumb if not dangerous idea!)