Similar to this question regarding transit on a DUB-ORD-PDX route, can I make duty-free purchases (e.g. alcohol) in Lima, and return with it to London via Paris (LIM-CDG-LHR), and bring the liquids with me?
I also note that this (unanswered) question is similar, though less specific about the intermediate airport. I don't know whether that would make a difference (i.e. whether individual airports have different mechanisms which might specifically allow or preclude such a thing).
The value of the drink is unlikely to be sufficient to make it worth buying a suitcase at CDG and checking that in, though a collapsible holdall might be one solution, if that's a possibility. I just find it frustrating that something which should be easy is made so difficult.
[Edit] The return flights (AF483 and AF1080) both use terminal 2E at CDG, which (according the the easycdg site in DCTLib's answer) means I'll definitely be going through a security check.