Fast cooker with a recipe for cow's heart (6)

I believe the answer is:

starve

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

'fast' is the definition.
(to fast is to refrain from eating food)

I don't understand how the rest of the clue works.

(Other definitions for starve that I've seen before include "Suffer from food deprivation" , "Die from lack of food" , "Stop feeding" , "Die of hunger" , "Become famished" .)

I've seen this clue in The Independent.

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.