Spoils question about shops offering confectionery (11)
I believe the answer is:
marshmallow
'confectionery' is the definition.
(I know that marshmallow is a type of confectionery)
'spoils question about shops' is the wordplay.
'spoils' becomes 'mars' ('mar' can be a synonym of 'spoil').
'question' becomes 'how' (how is a question word).
'about' is an insertion indicator.
'shops' becomes 'mall'.
'how' going around 'mall' is 'hmallow'.
'mars'+'hmallow'='MARSHMALLOW'
'offering' is the link.
(Other definitions for marshmallow that I've seen before include "Spongy confection - pink-flowering plant" , "Spongy jellylike sweet" , "sweet little thing" , "Confection commonly toasted" , "Sweet, often toasted" .)