Originally, Noah found it intoxicating! (4)

I believe the answer is:

wine

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

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for wine that I've seen before include "champagne, perhaps" , "eg Claret" , "Fermented grape juice" , "A sweet white cargo of Masefield's" , "Rich red" .)

I've seen this clue in the Evening Standard.

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