What Frederic ordered around lunchtime in the Chinese restaurant (5,4)

I believe the answer is:

fried rice

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

'restaurant' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.

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

Can you help me to learn more?

(Another definition for fried rice that I've seen is " Accompaniment to Chinese dish".)

I've seen this clue in the Evening Standard.

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.