[ Sylvain just folds his arms over his chest and regards them both with amusement as they try to wheedle their way into "convincing" him of all this.

Joke's on them. He's already feeling possessive of the very nice kitchen. And he's well aware of the alternative if he doesn't claim it as his domain.

Which is what has him poking a finger lightly into Claude's chest with a smirk. ]

I've tasted your attempts at cooking, Your Dukishness. Trust me, never having to repeat that experience will not be a hardship. And Hilda, love, I know very well you'd spend more time trying to delegate every step of it to someone else that we'd probably starve before a meal is ever finished. So I'm not going to argue and you're both lucky I paid such close attention to Mercy and Ashe and Dedue when they had kitchen duty.