What about the salvation of the undigestible onion?

It all began one day when it was fated that I shall uncover the mysteries of lower beings. Krushnaa, who decided to be one of the creatures in my homely surroundings was consuming chicken biryani with me. She had loaded her plate with a heap of rice and realised she had left the sliced onions in the kitchen. I was promptly summoned to fetch them. But distracted by very exciting conversation across the kitchen and the dinning room the unlucky onions stayed where they were. Even as Krushnaa secondhelped her plate with another heap of rice, no attention was paid to the sulking onions that lay beside.
Thus the thought appeared. The salvation of the onions, the aim of their existence, what lies beyond their life.. from the time they are plucked from the plants, plucked from life, processed and carried- being their time in purgatory to finally be digested to become one with all of their kind- must be the secret of the afterlife of the onion.

Alas, these onions suffer the bad luck of an undigested hell.