Leaving city, Eccles packs a lot of ice for twists (8)

I believe the answer is:

crinkles

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'twists' is the definition.
The answer and definition can be both shapes as well as being plural nouns.
Perhaps you can see an association between them that I don't see?

'leaving city eccles packs a lot of ice' is the wordplay.
'leaving' is a deletion indicator.
'city' becomes 'EC' (the City of London postcode).
'packs' indicates putting letters inside (inserted letters are packed inside).
'a lot of ice' becomes 'rink' (I can't justify this - if you can you should believe this answer much more).
'eccles' with 'ec' removed is 'cles'.
'cles' placed around 'rink' is 'CRINKLES'.

'for' acts as a link.

Can you help me to learn more?

I've seen this clue in The Independent.

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