Crossword Genius

Magnificent party, we hear -- top quality wine (5,3)

Ross

I believe the answer is:

grand cru

I'm a little stuck... Click here to teach me more about this clue!

'top quality wine' is the definition.
'grand cru' can be an answer for 'wine' (term for high-quality wine). I'm unsure of the 'top quality' bit.

'magnificent party we hear' is the wordplay.
'magnificent' becomes 'grand' (I've seen this before).
'party' becomes 'crew' (both can mean a group of people).
'we hear' shows a homophone (sound like).
'crew' is a homophone of 'cru'.
'grand'+'cru'='GRAND CRU'

Can you help me to learn more?

(Other definitions for grand cru that I've seen before include "special wine" , "A wine of the best grade" , "fine wine" , "Type of wine" , "Superior wine" .)

I've seen this clue in The Telegraph.
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