Small shop offering large spoon (5)
I believe the answer is:
scoop
'large spoon' is the definition.
(spoon for scooping out food)
'small shop' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'shop' becomes 'coop' (short for The Co-operative Group).
's'+'coop'='SCOOP'
'offering' acts as a link.
(Other definitions for scoop that I've seen before include "Waugh novel; some ice-cream" , "Exclusive newspaper story" , "Ice-cream utensil" , "Exclusive news story" , "war novel" .)