The most common and most likely answer to this crossword clue is the 10 letter word CARBONNADE
I've seen this crossword clue in The Guardian
C
A
R
B
O
N
N
A
D
E
More clues leading to the result CARBONNADE
Buddy explains!
The straight part
We know that "stew" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case stew = carbonnade.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 CARBONNADE mean?
CARBONNADE noun- A stew of meat cooked in beer
- Broiled meat or fish; carbonado