Mainly depends on whether the quantity is large or small. If the quantity is large, the average cost will look much better. The most important thing is that you can't use up the least amount of materials at once. Do it in three times, and make 5~6 pieces each time (one cut), so one piece is almost 6~7 yuan, which is not much cheaper than the outside, but it is really reassuring and fulfilling to win in the advantage of materials.