The most common and most likely answer to this crossword clue is the 6 plus 3 letter word PEPPER POT
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Buddy explains!

The straight part
We know that "seasoned Caribbean stew" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case seasoned caribbean stew = pepper pot.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 PEPPER POT mean?
PEPPER POT noun- A small container with a perforated top used for sprinkling ground pepper
- A soup made of tripe, vegetables and dumplings, seasoned with pepper.
- To intersperse privately-owned houses and social housing.