Shabu Shabu (しゃぶしゃぶ）
Shabu Shabu (しゃぶしゃぶ) is one of the Nabe Mono (なべもの) , which are cooked in quite a pot. Usually Nabe Mono are enjoyed during the winter season. People get together, surround the pot, and eat together while cooking by themselves. (Wikimedia: https://en.wikipedia.org/wiki/Shabu-shabu)
Shabu Shabu is cooked at home and served in its speciality restaurants all over Japan. Depending where you live, ingredients are slightly different from one another, but the key is the freshness of beef, which is thinly sliced. The thinly sliced beef is the kind of meat you have hard time getting except the places where lots of Japanese grocery stores like Los Angeles or New York. Some purchase a slicer for beef for this purpose and cook it at home. Clever!