The sous is responsible for the kitchen when the chef's not around.
6 seconds sound clip from the Ratatouille movie soundboard.
You can hear this line at 00:19:57 in the Blu-ray version of the movie.
Quote context
[...]
- You've read my book. Let us see how much you know, huh?
- The sous is responsible for the kitchen when the chef's not around.
- Saucier, in charge of sauces. Very important.
- Chef de partie, demi chef de partie, both important.
- Commis, commis, they're cooks. Very important.
[...]