The most common and most likely answer to this crossword clue is the 12 letter word STRAWBERRIES
I've seen this crossword clue in The Daily Telegraph
S
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More clues leading to the result STRAWBERRIES
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 = strawberries.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 STRAWBERRIES mean?
STRAWBERRIES noun- The sweet, usually red, edible fruit of certain plants of the genus Fragaria.
- Any plant of the genus Fragaria (that bears such fruit).
- A dark pinkish red colour, like that of the fruit; strawberry red.
- Something resembling a strawberry, especially a reddish bruise, birthmark, or infantile hemangioma (naevus).
- A prostitute who exchanges sexual services for crack cocaine.