The most common and most likely answer to this crossword clue is the 6 letter word DEWLAP
I've seen this crossword clue in Financial Times
D
E
W
L
A
P
More clues leading to the result DEWLAP
- Some hide mate married on the rebound
- Why best man turned up dependent on the turkey?
- Friend we would back may, at a stretch, be 16 at the front?
- It depends on stock we’d returned with drink
- Wattle lost colour? Quite the reverse
- Two mates returned, hanging by the neck
- Friend tied knot round wattle
- Friend hitched up a fold
- Moisten tops of thighs and drooping throat
- Loose skin lost importance with weight in rolls
Buddy explains!

The straight part
We know that "It depends on stock/drink" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case it depends on stock/drink = dewlap.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 DEWLAP mean?
DEWLAP noun- The pendulous skin under the neck of an ox, or a similar feature on any other animal.
- The sagging flesh on the human throat of an old person.