Crossword Genius

Stop stirring ale into beverage, hopelessly out of fashion (5,2)

Ross

I believe the answer is:

leave be

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

'beverage hopelessly out of fashion' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.

'stop stirring ale' is the wordplay.
I cannot quite understand how this works, but
an anagram of 'ale' is 'lea' which is located in the answer.
This explanation may well be incorrect...

'into' acts as a link.

Can you help me to learn more?

(Other definitions for leave be that I've seen before include "Refrain from disturbing (someone)" , "Let remain undisturbed" .)

I've seen this clue in the Sydney Morning Herald.
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