Fueling up with ethanol and vegetable oils was common long before the development of the internal combustion engine. Vegetable and animal oil lamps have been used since the dawn of civilization. Increasingly efficient heaters and lamps meant that higher quality fuels were developed. For example, small alcohol stoves (also called “spirit lamps”) were commonly used by travelers in the 17th century to warm food and themselves. One of Ben Franklin’s spirit lamps is on display in a Philadelphia exhibit.
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