Most recent concoction after fruit crush (9)

'crush' is the definition.
(limerence is the state of having a crush)

'most recent concoction after fruit' is the wordplay.
'most' means to remove the last letter.
'concoction' is an anagram indicator.
'after' means one lot of letters go next to another.
'fruit' becomes 'lime' (lime is a kind of fruit).
'recent' with its last letter taken off is 'recen'.
'recen' is an anagram of 'rence'.
'rence' put after 'lime' is 'LIMERENCE'.