Cryptic crossword clue
In fitful pain, wine not finished: I’m surprised! One’s always at the bar! 10

The most common and most likely answer to this crossword clue is the 10 letter word CHOCOHOLIC

I've seen this crossword clue in The Guardian
C
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O
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C

Buddy explains!

The straight part
We know that "One’s always at the bar" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case one’s always at the bar = chocoholic.
The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.
This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.

What does CHOCOHOLIC mean?

CHOCOHOLIC noun
  1. Someone who has such a liking for chocolate that they appear to be addicted to it.
CHOCOHOLIC adjective
  1. Addicted or seemingly addicted to chocolate; characteristic of a chocoholic.

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