Characteristic of feeling content from addictive drug (6)

I believe the answer is:

coffee

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

'addictive drug' is the definition.
'coffee' can be an answer for 'drug' (thesaurus). I am not sure about the 'addictive' bit.

'characteristic of feeling content' is the wordplay.
'content' indicates a hidden word (letters contained within the clue).
'COFFEE' can be found hidden inside 'characteristic of feeling'.

'from' acts as a link.

Can you help me to learn more?

(Other definitions for coffee that I've seen before include "Barista's product" , "Popular bean drink, maybe instant" , "Popular beverage" , "Something drunk - cafe in France" , "Shrub; drink" .)

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

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