The most common and most likely answer to this crossword clue is the 6 plus 4 letter word BRANDY SNAP
I've seen this crossword clue in The Daily Telegraph
B
R
A
N
D
Y
S
N
A
P
More clues leading to the result BRANDY SNAP
- Drink on break, and a crisp biscuit
- Biscuit tin — talk about that trademark on top
- Make revolting violet-coloured biscuit
- Book with hot photo takes the biscuit
- Biscuit type and bloomer to the left?
- Aroused couple at the table cutting bread that's sweet
- Make flower from the east something sweet
- Desirous boy first getting small rest and biscuit
- Biscuit: sort with violet back
- Bishop aroused rising censure with small biscuit
Buddy explains!

The straight part
We know that "biscuit" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case biscuit = brandy snap.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.