The most common and most likely answer to this crossword clue is the 6 letter word PAPAWS
I've seen this crossword clue in Financial Times
P
A
P
A
W
S
Buddy explains!

The straight part
We know that "fruit" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case fruit = papaws.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 PAPAWS mean?
PAPAWS noun- A tree, Carica papaya, of tropical America, belonging to the order Brassicales, and producing dull orange-colored, melon-shaped fruit.
- (less commonly) A father.
- Grandfather.