What container is commonly used to serve small portions of dim sum at yum cha?

A bamboo steamer is commonly used to serve small portions of dim sum at yum cha.

These stackable vessels cook and present foods such as har gow, siu mai, steamed buns, and rice rolls. A woven bamboo base lets steam circulate, while the lid retains heat and moisture. Restaurants can stack several tiers over boiling water, allowing multiple dishes to cook at once.

Bamboo steamers are especially associated with Cantonese cuisine and yum cha because they are practical as well as attractive: dishes can go from kitchen to table without being transferred to another serving container. The baskets also help preserve the soft texture of dumpling wrappers and buns.

The steamer is not itself a type of dim sum. It is the cooking and serving vessel. Modern versions may be made from metal, wood, silicone, or other materials, but the round bamboo basket remains the familiar classic. Diners often encounter the baskets sitting on a Lazy Susan for communal sharing.