Prepare foie gras pâtés for this landmark ceremony (4,2,7)
I believe the answer is:
rite of passage
'this landmark ceremony' is the definition.
'rite of passage' can be an answer for 'ceremony' (I've seen this before). I'm not sure about the 'this landmark' bit.
'prepare foie gras pates' is the wordplay.
'prepare' is an anagram indicator.
'foie'+'gras'+'pates'='foiegraspates'
'foiegraspates' is an anagram of 'RITE OF PASSAGE'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for rite of passage that I've seen before include "Formative experience" , "The Wedding, perhaps?" , "Ceremony marking stage of life" , "Very important life event" , "Event marking a significant transition" .)