Hard sweet idiot let fall (5,4)

I believe the answer is:

lemon drop

'hard sweet' is the definition.
(type of boiled sweet)

'idiot let fall' is the wordplay.
'idiot' becomes 'lemon' (term for a foolish person).
'let fall' becomes 'drop' (synonyms).
'lemon'+'drop'='LEMON DROP'

(Another definition for lemon drop that I've seen is " Fruit sweet".)

I've seen this clue in The Times.

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