Surface analysis hot + pot. For sense of stewed meat and potatoes, compare Frenchpot-au-feu. For the sense of a communal meal cooked at the table, Calque of Chinese火锅(huǒguō).
A communalmeal, popular in China, where diners share a bowl of hot broth or stock into which uncooked foods such as mushrooms, vegetables, and cuts of meat are dipped until they are cooked enough to be eaten.