Bertolt remains rather wide-eyed, not insulted or abashed by that smirk. Truly, he's not trying to be rude; he's just trying to wrap his head around a non-Titan being so tall. But he processes her words better this time, even if he isn't entirely sure he can help.

Curry buns. Given the context, Bertolt guesses that's a kind of food. Unfortunately, he's never had it before, nor does he have any idea what goes in it.

He briefly worries his lower lip with his teeth, then asks, "Do you know what the ingredients are?"