Just a hint of a green salad fruit? (3)

I believe the answer is:

cue

I'm a little stuck... Click here to teach me more about this clue!

'hint of a green salad fruit?' is the definition.
'cue' can be an answer for 'hint' (cue can mean a hint or prompt). I'm unsure of the 'of a green salad fruit?' bit.

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for cue that I've seen before include "Prompt; signal" , "Signal to players" , "Signal to begin - tapered stick" , "Hint on stage" , "Sign" .)

I've seen this clue in the Evening Standard.

Want a hint initially instead of a full solution? Install my app