Korean rice balls or Jumeokbap 주먹밥 are made with short-grain white rice that is rolled into compact balls filled with tuna. These seaweed-covered rice balls are a popular flavorful snack that is perfect for picnics or as an on-the-go snack! If tuna rice balls are not your thing, you can substitute the filling with bulgogi, kimchi, or seasoned vegetables. 😋