Jiaozi, which evolved from wonton [10], originated from the ancient corner of China, and was originally named "Jiaoer", a traditional noodle of Han nationality, with a history of 1800 years. It was invented by Zhang Zhongjing, a native of Nieyang, Nanyang (now Dengzhou, Nanyang, Henan) in the Eastern Han Dynasty [2-3], and was originally used as medicine. Jiaozi, also known as jiaozi, is deeply loved by the people of China. It is a staple food for people in northern China, a local snack, and also a Chinese New Year food. There is a folk proverb called "The weather is cool, so we should eat jiaozi in the New Year. "jiaozi often cooks with flour and leather bag stuffing.

Casserole is a kind of cooker. Traditional casserole is a ceramic product made of raw materials that are not easy to transfer heat, such as seasonable, feldspar and clay. Fired at high temperature, it has the characteristics of air permeability, adsorption, uniform heat transfer and slow heat dissipation. The recipes that depend on casserole include casserole chicken, casserole tofu, casserole fish head and so on. Due to the problems of manufacturing technology and raw materials, the traditional casserole is not resistant to the change of temperature difference, easy to burst and cannot be dry-burned. Aiming at this problem of traditional casserole, in recent ten years, after research and improvement, spodumene was added into raw materials to make a high-temperature resistant casserole, which can withstand hundreds of degrees of high temperature without cracking while maintaining its original advantages, greatly improving the practicality of casserole.