1, "private kitchen" refers to the "buying and selling" of small-scale catering opened in residential or office buildings and skillfully operated by chefs.

2. The history of "private cuisine" can be traced back to the Guangxu period in the late Qing Dynasty. It is said that Tan Qing is a descendant of an aristocratic family whose ancestral home is Guangdong. He worked as an official and ate well. His father, Tan Zongjun, combined Cantonese cuisine in his hometown with Beijing cuisine, making Tan Jiacai's voice shocked Beijing. Later, when the family came down, Tan _ Qing lived on empty land, so the "private kitchen" of Tan's family was cooked by the chef or concubine to help make up the family's expenses. A banquet was held at home, with three seats per night, which had to be booked three days in advance and one month at the peak.