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Gelatin, a protein produced from collagen extracted from the boiled bones, connective tissues, and intestines of animals, has been well-known and used for many years.
It was popularized in the Victorian era with spectacular and complex "jelly moulds". Gelatin was sold in sheets and had to be purified, which was very time-consuming. It also made gelatin desserts the province of the relatively well-to-do. In 1845, industrialist Peter Cooper (who built the first American steam-powered locomotive, the Tom Thumb), obtained a patent (US Patent 4084) for powdered gelatin.