Here’s your simple cheat sheet: If it snaps, wrinkles, or tastes like a chewy, smoky delight, eat it. That’s natural or collagen casing. You are safe. You are winning.
If it feels like a plastic bag around your salami, or if you’re eating a massive, waxy-looking sausage that says “peel before cooking,” then don’t. That stuff is for the trash, not your teeth.
And in the end, if you accidentally eat a plastic casing? Don’t panic. It’ll pass. But it won’t “snap.” And that, my friends, is the real tragedy. So go forth, bite into that bratwurst, and listen for the glorious sound of victory.