Wind a mixture of sweet and sour (3'6)

I believe the answer is:

sou'wester

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'wind a mixture' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps there's an association between them I don't understand?

'of sweet and sour' is the wordplay.
'of' indicates anagramming the letters (the answer comes from or 'of' the letters).
'and' says to put letters next to each other.
'sweet' put after 'sour' is 'soursweet'.
'soursweet' anagrammed gives 'SOU'WESTER'.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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