Last one, but can’t parse - help, please!
48d) Metal container overturned, lid missing. (7)
I have S?A?N?R, and am thinking SCANNER, but my brain has seized up...
And I've just realised, looking at it, that it's not actually an anagram of RETSINA. But I've sent it off, first-class post so I really don't care any more. Crosswords are silly, anyway.
Yes, it does indeed have a Christmas theme, and the whole thing is beautifully complicated. And Mamya - thank you very much for (part-)parsing it for me, finally: it's one of three themed clues which concern DRINKS. I got the right answer by happenstance. Which was nice.