In the 19th century, the US had a serious ecological crisis: after extracting the fibers, cotton planters were throwing the seeds in the rivers, creating pollution. As a response, the government passed a law prohibiting the practice. This became a problem for the planters, as the cotton seeds started to accumulate in their properties. For every 100 kilos of cotton fiber that one can get from the plants, there are 162 kilos of cotton seeds, so we can just imagine the huge piles of cotton seeds sitting in the farms.
Some intelligent man developed a technique to extract oil from the seeds, using chemical solvents. This oil was not considered edible, therefore it was sold as lamp oil. Since this oil was essentially made out of garbage, it was cheap to produce and therefore his company was able to make a good profit.
Later, cheaper kerosene oil made from petroleum pushed him out of business. He had then one of these crazy ideas: Maybe instead of selling his oil as lamp oil, he could make people eat it! After perfecting the production of the cottonseed oil, and adding a hydrogenating process, he came up with something that could be used in place of butter or lard. This led to the creation of a product called Crisco, that made millions of dollars to the people involved.
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