A little garlic in cold relish (5)
I believe the answer is:
clove
'a little garlic' is the definition.
(I've seen this in another clue)
'cold relish' is the wordplay.
'cold' becomes 'c' (eg on taps).
'relish' becomes 'love'.
'c'+'love'='CLOVE'
'in' is the link.
(Other definitions for clove that I've seen before include "caused separation" , "Spicy bud - section of garlic" , "A small bulb as of garlic" , "A spice; a garlic bulb" , "Garlic segment" .)