Pepper steak (Chinese: 青椒牛 or 青椒牛肉, pinyin: qīngjiāo niúròu; Japanese: 青椒肉絲, chinjao ro su; also called green pepper steak) is a stir-fried Chinese American dish consisting of sliced beef steak (often flank, sirloin, or round) cooked with sliced green and/or red bell peppers and other seasonings such as soy sauce and ginger, and usually thickened with cornstarch. Sliced onions are also often included in the recipe.Evidence for the dish's existence in the United States dates from at least 1948.