Crossword Genius

Such a price as is charged for a strong drink? (5)

Ross

I believe the answer is:

stiff

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

'such' is the definition.
Both the definition and answer are adjectives. Perhaps you can see an association between them that I don't see?

'a price as is charged for a strong drink?' is the wordplay.
I cannot really understand how this works, but
'strong' could be 'ff' and 'ff' is located in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for stiff that I've seen before include "cheat" , "Starched, rigid" , "Frigid" , "Formal" , "One dead" .)

I've seen this clue in the Evening Standard.
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