Answer:
This type of food, which is a fungus, is often served on supreme pizza, in spaghetti and in a particular "cream of" style soup
Lovely and round, I shine with pale light, Grown in the darkness, a ladyβs delight.
I'm a green veggie that looks like a tiny tree.
Many foods can make me strong but give me water and I won't last long.
Itβs so fragile even just saying its name can break it. What is it?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.