Snacks for father's linkages (7)

I believe the answer is:

pasties

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'snacks' is the definition.
The definition and answer can be both things that one consumes for nourishment as well as being plural nouns.
Maybe there's a link between them I don't understand?

'father's linkages' is the wordplay.
'father's' becomes 'pa's' (pa can mean dad or father).
'linkages' becomes 'ties' (I can't justify this - if you can you should believe this answer much more).
'pas'+'ties'='PASTIES'

'for' is the link.

Can you help me to learn more?

(Another definition for pasties that I've seen is " Food associated with Cornwall".)

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

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