Answer:
A toasty and crunchy cereal would be pointless without this spice.
I'm a pie, but I come with peperoni and cheese
What can be opened but cannot be closed?
It's a symbol and a fruit, For man's folly, evil's root. But also for great inspiration, and famous application.
I add lots of flavor and have many layers, but if you get to close I'll make you cry. What am I?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?