Dim sum is a large range of small Chinese dishes that are traditionally enjoyed in restaurants for brunch. Most modern dim sum dishes are commonly associated with Cantonese cuisine, although dim sum dishes also exist in other Chinese cuisines. In the tenth century, when the city of Canton (Guangzhou) began to experience an increase in commercial travel, many frequented teahouses for small-portion meals with tea called "yum cha" (brunch). "Yum cha" includes two related concepts. The first is "jat zung loeng gin", which translates literally as "one cup, two pieces". This refers to the custom of serving teahouse customers two delicately made food items, savory or sweet, to complement their tea. The second is dim sum, which translates literally to "touch the heart", the term used to designate the small food items that accompanied the tea.

A teahouse or tearoom is an establishment which primarily serves tea and other light refreshments. A tea room may be a room set aside in a hotel, especially for serving afternoon tea, or may be an establishment that only serves cream teas. Although the function of a tearoom may vary according to the circumstance or country, teahouses often serve as centers of social interaction, like coffeehouses.