A Dutch oven is a thick-walled cooking pot with a tight-fitting lid. Dutch ovens are usually made of seasoned cast iron, however some Dutch ovens are instead made of cast aluminium, or are ceramic. Some metal varieties are enameled rather than being seasoned. Dutch ovens have been used as cooking vessels for hundreds of years. They are called casserole dishes in English speaking countries other than the United States ("casserole" means "pot" in French), and cocottes in French. They are similar to both the Japanese tetsunabe and the Sač, a traditional Balkan cast-iron oven, and are related to the South African Potjie and the Australian Bedourie oven.
During the late 17th century, the Dutch system of producing these cast metal cooking vessels was more advanced than the English system. The Dutch used dry sand to make their molds, giving their pots a smoother surface. Consequently, metal cooking vessels produced in the Netherlands were imported into Britain. In 1704, an Englishman named Abraham Darby decided to go to the Netherlands to observe the Dutch system for making these cooking vessels. Four years later, back in England, Darby patented a casting procedure similar to the Dutch process and began to produce cast-metal cooking vessels for Britain and her new American colonies. Thus the term “Dutch oven” has endured for over 300 years, since at least 1710.
American Dutch ovens changed over time during the colonial era. These changes included a shallower pot, legs to hold the oven above the coals, and a lid flange to keep the coals on the lid and out of the food. Paul Revere is credited with the design of the flat lid with a ridge for holding coals as well as the addition of legs to the pots.
Colonists and settlers valued cast-iron cookware because of its versatility and durability. Cooks used them to boil, bake, stew, fry, and roast. The ovens were so valuable that wills in the 18th and 19th centuries frequently spelled out the desired inheritor. For example, Mary Ball Washington (mother of President George Washington) specified in her will, dated 20 May 1788, that one-half of her "iron kitchen furniture" should go to her grandson, Fielding Lewis, and the other half to Betty Carter, a granddaughter. This bequest included several Dutch ovens.