Ziwei white donkey

If you see the color of roast duck is dark, wrinkled and ugly, then it is probably frozen duck, because the skin tissue of duck is destroyed after long-term freezing, so it is no longer elastic and its tension is not as good as that of fresh duck. Especially when burning paper at high temperature or for a long time, it is easy to wrinkle if the fire control is not good. On the contrary, fresh duck skin is smooth, tight and elastic.