Crossword Genius

Opens lid off summer creams (8)

Ross

I believe the answer is:

unblocks

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

This could be a double definition.

'opens lid' is the first definition.
The definition and answer can be both related to change as well as being verbs in their -s form.
Maybe they are linked in a way I don't understand?

'off summer creams' is the second definition.
The definition and answer can be both related to change as well as being verbs in their -s form.
Maybe there's an association between them I don't understand?

Can you help me to learn more?

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