Sweets in tin daddy emptied (5)
I believe the answer is:
candy
'sweets' is the definition.
(I've seen this before)
'tin daddy emptied' is the wordplay.
'tin' becomes 'can' (synonyms).
'emptied' says to hollow out the word (remove centre letters).
'daddy' with its centre taken out is 'dy'.
'can'+'dy'='CANDY'
'in' is the link.
(Other definitions for candy that I've seen before include "Sugary sweet" , "Crystallised sugar; US sweets" , "American confectionary" , "American sweets" , "Sweet (US)" .)