The French starters of snails – succulent? Not so much (4)
I believe the answer is:
less
'not so much' is the definition.
(I've seen this before)
'the french starters of snails succulent?' is the wordplay.
'the french' becomes 'le' ('the' in French).
'starters of' says to take the initial letters.
The first letters of 'snails succulent' is 'ss'.
'le'+'ss'='LESS'
(Other definitions for less that I've seen before include "minor" , "inferior" , "A smaller amount" , "more, as they say" , "Comparatively little" .)