A reason we got drunk with gin drink (9,3)

I believe the answer is:

norwegian sea

I'm a little stuck... Click here to teach me more about this clue!

'drink' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'a reason we got drunk with gin' is the wordplay.
'got drunk with' is an anagram indicator.
'a'+'reason'+'we'='areasonwe'
'areasonwe' mixed up with 'gin' makes 'NORWEGIAN SEA'.

Can you help me to learn more?

I've seen this clue in The Times and The Sunday Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.