Shakes Diana's very dry champagne served up with starter of scallops (8)

I believe the answer is:

disturbs

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

'shakes' is the definition.
The answer and definition can be both related to change as well as being verbs in their -s form.
Maybe you can see an association between them that I can't see?

'diana's very dry champagne served up with starter of scallops' is the wordplay.
'diana's very' becomes 'dis' (I can't explain this - if you can you should give a lot more credence to this answer).
'dry champagne' becomes 'brut' (I've seen this before).
'served up' is a reversal indicator.
'with' means one lot of letters go next to another.
'starter of' indicates taking the first letters.
The first letter of 'scallops' is 's'.
'brut' back-to-front is 'turb'.
'dis'+'turb'+'s'='DISTURBS'

Can you help me to learn more?

(Other definitions for disturbs that I've seen before include "Breaks the quiet or calm of" , "Upsets or troubles" , "Interferes with peace or order" , "Upsets or stirs up" .)

I've seen this clue in the Irish Times and the Irish Times (Crosaire).

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