Caquelon

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A caquelon (French pronunciation: [kakˈlɔ̃]) is a cooking vessel of stoneware, ceramic, enamelled cast iron, or porcelain for the preparation of fondue, also called a fondue pot.
The word is from a Swiss French term originating in the 18th century derived from the Swiss German word Kakel meaning an earthenware casserole. The term is in common use throughout Switzerland, and in the Franche-Comté and Provence regions of France.