Fine food shop to provide food, mostly (8)
I believe the answer is:
delicate
'fine' is the definition.
(similar in meaning)
'food shop to provide food mostly' is the wordplay.
'food shop' becomes 'deli' (short for delicatessen).
'to provide food' becomes 'cater' (I've seen this in another clue).
'mostly' means to remove the last letter (most but not all of the word).
'cater' with its last letter removed is 'cate'.
'deli'+'cate'='DELICATE'
(Other definitions for delicate that I've seen before include "Not robust" , "Exquisitely fine, easily damaged" , "Exquistley fine or easily damaged" , "Very fine; fragile" , "Very fine or easily broken" .)