[Byleth cocked his head fractionally at Yuri's odd change in tone, but didn't press him on it. However, he felt he should clarify...]

Just so you're aware... I'm immune to most poisons, so you probably shouldn't use me as a benchmark for judging if a meal is safe or not. However, I've observed many who aren't immune to poisons eat this food, and I've haven't observed any strange behaviour or ailments from them. So, this is likely safe.

[He pointed at a nearby plate plied with tropical fruit.]

You should try the fruit, at least. It's sweet and less likely to be tampered with.