DO NOT READ IF SENSITIVE TOWARDS ANY MYTHOLOGY. People may speak of eating your favorite beings, please be prepared for such.
To start off, While I am a pescatarian, I think biblical angels would be delicious fried / grilled, specifically the ones who aren't high enough to be abstract shapes, as I do not think I can stomach a wheel.
I never thought about burning a phoenix might be problematic. But isn't that an infinite phoenix glitch in which someone can keep making more phoenixes to eat?
Dark thought for a D&D group: How much of a Phoenix do you think you need to keep for it to respawn?