The most common and most likely answer to this crossword clue is the 12 letter word CHEESEMONGER
I've seen this crossword clue in Financial Times
C
H
E
E
S
E
M
O
N
G
E
R
More clues leading to the result CHEESEMONGER
Buddy explains!

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 CHEESEMONGER mean?
CHEESEMONGER noun- Someone who sells cheese.