Bamboo steamer

From the Neolithic period, ceramic steamers known as yan have been found at the Banpo site, dating to 5000 BC.

An Eastern Han dynasty (25–220 AD) kitchen mural depicted in Dahuting Tomb No.1 in Mi County, Henan Province, is the earliest evidence of the origin of modern steamers.

They are also known in the Western world for its role in cooking and serving dim sum particularly during the practice of yum cha.

[3] Steamers are produced by removing the skin from the bamboo, soaking it in water, shaping it into a circle, and hammering it in with nails.

The base is made up of woven bamboo strips, and production can take anywhere from 15 minutes to several hours depending on its size.

A simple two level bamboo steamer with a diameter of 20 cm
Stacked dim sum steamers