Best restaurants you can enjoy Nikuman [肉まん:Nikuman] in Japan! Nikuman is a type of Chinese steamed meat bun that fluffy dough folds the minced pork meat. Unlike authentic mean bun in China, Japanese one has more variety in the filling. Japanese convenience stores often offer creative Nikumans, such as Pizza-man containing cheese and tomato sauce for the filling, and An-man filling a red bean paste.