The most common and most likely answer to this crossword clue is the 6 plus 6 plus 7 letter word STICKY TOFFEE PUDDING
I've seen this crossword clue in Financial Times
S
T
I
C
K
Y
T
O
F
F
E
E
P
U
D
D
I
N
G
Buddy explains!
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.