In terms of world-building though, they probably wouldn’t use liquid paraffin (which is called kerosine in America or something) as it’s a product of petroleum. They’ll probably use some other sources of oil which are easier to extract.
Oil extracted from plants are ideal and lemongrass might be a good candidate. That plant is practically like a weed. It’s hardy, grows relatively fast, and can grow on poor soil.
Huh. Looks like most of the picture links on this page are broken. Only the top image loads for me.
I’ve taken a quick look at the links and oh gosh, it was still linking back to the old host D: I’ve fixed this page but it’ll take me a while to relink all the images, but thanks for pointing it out