Transportation costs for food sent out to the outlying Penghu Islands, for example, are very high, so sometimes a three-dish school lunch will star eggs in all the dishes--scrambled eggs with shredded carrots, eggs with daikon, and egg-drop soup with seaweed. The same is sometimes true of pork balls, because the prices of these two ingredients tend to stay low.
比如澎湖離島地區學校因運送成本高，有時兩菜一湯的食材竟全都是雞蛋──紅蘿蔔絲炒蛋、菜脯蛋、紫菜蛋花湯，或都以貢丸為食材，因代辦老師認為這兩樣食材價格固定又便宜，所以經常採用。