Vegetable oil lamps are a quick and relatively easy source of light and heat. They differ from kerosene lamps in construction, which is where I went wrong when I tried to make one awhile back. Tristan had more luck. This olive oil lamp was made out of a mason jar, a denim wick, and a piece of wire hanger to hold the wick up. He used this Mother Earth News article as a guide. It burned for three hours straight with no wick adjustments and no weird smells! This project was mostly just for fun, although Tristan is interested in learning more about veggie oil heaters for possible use in the gypsy wagon.