You must be the chef...
3 seconds sound clip from the Ratatouille movie soundboard.
You can hear this line at 01:37:50 in the Blu-ray version of the movie.
Quote context
[...]
- Who cooked the ratatouille? I demand to know!
- Thanks, but I'm just your waiter tonight.
- Then who do I thank for the meal?
- If you wish to meet the chef, you will have to wait until all the other customer have gone.
- At first, Ego thinks it's a joke.
- But as Linguini explains, Ego's smile disappears.
- He doesn't react beyond asking an occasional question.
[...]