Remove carbon from extremely dire fizzy drink (6)

I believe the answer is:

decoke

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'remove carbon' is the definition.
(I've seen this in another clue)

'extremely dire fizzy drink' is the wordplay.
'extremely' says to hollow out the word (remove centre letters) (only the extremes of the word are used).
'fizzy drink' becomes 'coke' (Coke is an example. I am not sure about the 'fizzy' bit.).
'dire' with its middle removed is 'de'.
'de'+'coke'='DECOKE'

'from' is the link.

Can you help me to learn more?

(Another definition for decoke that I've seen is " Remove built-up carbon from an engine".)

I've seen this clue in The Independent.

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