The most common and most likely answer to this crossword clue is the 9 letter word DRUMSTICK
I've seen this crossword clue in Financial Times
D
R
U
M
S
T
I
C
K
More clues leading to the result DRUMSTICK
- Joint put behind tap
- Piece of chicken held in the kitchen?
- Those producing tattoos mark right part of leg
- Part of animal that strikes a snare?
- One used to beat son covered in foul muck and dirt?
- Bit of chicken skin under this banger
- Batter on it or batter with it?
- Sign that nothing’s wrong after detective comes across suspicious joint
- Detective consuming alcoholic spirits with a little tender piece of chicken
Buddy explains!

The straight part
We know that "banger" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case banger = drumstick.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 DRUMSTICK mean?
DRUMSTICK noun- A stick used to play drums.
- The second joint of the legbone of a chicken or other fowl, especially as an item of food.
- The moringa or drumstick tree, Moringa oleifera, especially its slender, cylindrical pods.