Are such blondes always sweet? (5)

I believe the answer is:

honey

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'sweet?' is the definition.
(I know that honey is a type of sweet)

I cannot understand how the rest of the clue works.

(Other definitions for honey that I've seen before include "Sweet yellow liquid" , "Hive's product" , "Darling; hive product" , "Treasure" , "sweet thing" .)

I've seen this clue in the Evening Standard.

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