It’s a different type of bubbly (4)

I believe the answer is:

asti

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'type of bubbly' is the definition.
The definition suggests a singular noun which matches the answer.

'it's a different' is the wordplay.
'different' indicates anagramming the letters.
'its'+'a'='itsa'
'itsa' with letters rearranged gives 'ASTI'.

Can you help me to learn more?

(Other definitions for asti that I've seen before include "Capital of a north-west Italian province, known for its sparking wine" , "town in Italy" , "Piedmont wine city, SE of Turin" , "Italian product" , "Source of fizz" .)

I've seen this clue in The Mirror.

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