Crossword Genius

Food the teetotaller has to pay out for (5)

Ross

I believe the answer is:

patty

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

'food' is the definition.
(patty is a kind of food)

'teetotaller has to pay out for' is the wordplay.
I cannot really see how this works, but
'teetotaller' could be 'tt' (abbreviation) and 'tt' is found within the answer.
'to pay' could be 'pay' and 'pay' is located in the leftover letters.
No letters remain.
This explanation may well be incorrect...

'the' is the link.

Can you help me to learn more?

I've seen this clue in the Evening Standard.
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