Crossword Genius

A sweet smile on a new development (8)

Ross

I believe the answer is:

semolina

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'a sweet' is the definition.
(I've seen this before)

'smile on a new development' is the wordplay.
'a new' is an anagram indicator.
'development' becomes 'a' (I can't explain this - if you can you should give a lot more credence to this answer).
'smile'+'on'='smileon'
'smileon' anagrammed gives 'semolin'.
'semolin'+'a'='SEMOLINA'

Can you help me to learn more?

(Other definitions for semolina that I've seen before include "Hard particles of wheat used in puddings etc" , "A lemon is used in the pudding, strangely" , "Pudding flour" , "Form of wheat for puddings" , "sweet" .)

I've seen this clue in The Globe and Mail.
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