Edible food sometimes bolted (3)

I believe the answer is:

nut

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

'edible food' is the definition.
'nut' can be an answer for 'food' (type of food). I am not certain of the 'edible' bit.

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for nut that I've seen before include "Combines with bolt to secure" , "1A [CRACKPOT]?" , "Freak" , "Bolt's partner" , "Hard-shelled fruit or informal eccentric" .)

I've seen this clue in The Globe and Mail.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.