Lava + water + vat = obsidian = essence...... there now got it???I have, but its a bit hard to sift through 400 pages one page at a time.
All I can figure is getting nether essence is a quest reward at some point, but none of the quests I have finished so far have led me to that. Above that, I am tying to get redstone so I can have an easier time with Botania. The need for obsidian has also been troublesome, though I have already been to the nether without gathering any.