Kushi-katsu is a Japanese dish consisting of meat, vegetables, etc. on wooden skewers, covered with batter and fried. Eating styles and nicknames may differ depending on the region.
The oil used for frying is often lard, but there are restaurants that use vegetable-derived oils.
Osaka-style kushi-katsu is often served in a style where people dip skewers in a shared stainless steel container of special sauce, and when sharing the sauce it is an important rule of etiquette not to take a bite and then dip again.