One wine or another drunk by computer company (8)
I believe the answer is:
'one wine' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.
'another drunk by computer company' is the wordplay.
'another' becomes 'rose' (I can't explain this - if you can you should give a lot more credence to this answer).
'drunk by' means one lot of letters goes inside another.
'computer' becomes 'PC' (personal computer).
'company' becomes 'co' (abbreviation).
'rose' placed inside 'pc' is 'prosec'.
'or' acts as a link.
Can you help me to learn more?
(Other definitions for prosecco that I've seen before include "Italian bubbly" , "white wine" , "Sparkling wine from Italy" , "drink" .)