Answer:
Cycle Cycle Cycle.
This is the main ingredient in spaghetti and Mac-ยญN-ยญCheese.
What is the end of everything?
Glittering points that downward thrust. Sparkling spears that do not rust. What is it?
They keep secrets locked away. And you pass through them each day. For each one there is a key, They respond to sesame.
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.