It is cold in South Africa, no? (7)

I believe the answer is:

cinzano

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'it' is the definition.
The definition suggests a singular noun which matches the answer.

'cold in south africa no?' is the wordplay.
'cold' becomes 'C' (eg on taps).
'south africa' becomes 'za' (abbreviation for Zuid-Afrika).
'c'+'in'+'za'+'no'='CINZANO'

'is' acts as a link.

Can you help me to learn more?

(Another definition for cinzano that I've seen is " Brand of Italian vermouth".)

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