(Wow! That’s a new one.)
We didn’t believe it either, but not only are mushrooms not vegetables, they aren’t even plants! They have their own kingdom. So now have to add “fungi” to the animal/vegetable/mineral part of guessing games. Who knew?
Nutritionally, though, a lot of mushrooms are super-good for you. You make the rules that work for you, but don’t beat yourself if (better) mushrooms are your vegetable stand-in today.