The most common and most likely answer to this crossword clue is the 6 letter word BOMBES
I've seen this crossword clue in The Guardian
B
O
M
B
E
S
Buddy explains!
The straight part
We know that "puddings" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case puddings = bombes.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 BOMBES mean?
BOMBES noun- A dessert made from ice cream frozen in a (generally spherical or hemispherical) mold.
- (chiefly in German cooking) A small, cylindrical or spherical chocolate-covered confection. (Compare truffle.)
- An electromechanical device used in early cryptanalysis.