Oval dish (3)

I think it could be either:

Which length description are you looking for?:

egg

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

'oval dish' is the definition.
The definition and answer can be both things that one consumes for nourishment as well as being singular nouns.
Maybe there's an association between them I don't understand?

This is the entire clue.

Can you help me to learn more?

(Other definitions for egg that I've seen before include "Mine (slang)" , "Reproductive part" , "Source" , "It comes before or after the chicken?" , "Organism protected by shell" .)

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

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