"Bangjja" Brassware/黄铜器皿 ( 鍮器 ) /（유기 (방짜) Kitchen Ware
This set of Korean traditional bronzeware was displayed on the exhibition that I visited on 2nd Mar 2013. It is called " Bangjja" or " Yugi". It is made up of an alloy of copper 78% and tin 22% and has subtler colors. When containing boiled rice, the warmth lasts long compared with stainless steel ware...
在 3月2日去参观一项展览，展览会上展出这一套传统的韩国黄铜器皿。韩文称它为 “Bangjja”或者“Yugi”，他是采用铜 78% 和 锡 22% 的合金制成的。
Bangjja, also known as yugi, is a Korean type of hand-forged bronzeware. A complete set of bangjja includes dishes, bowls, spoons and chopsticks. The main difference between Korean bronzeware or Banjja from other bronzeware is the alloy ratio of copper to tin. The Bangjja contains much more tin than other bronzewares (Cu:Sn = 78:22 as volume) while the normal ratio of tin to copper is 1/9. Due to this compositional difference, bangjja (unlike other kinds of bronzeware) can be sterilized. For this reason, it has historically been used as tableware for the royal families of Korea. Bangjja is used for the traditional presentation of Korean royal court cuisine (surasang).
（ source : wikipedia)