The food appears green after peeling, which is caused by the taro being exposed to the soil for a long time during its growth and exposed to sunlight for a long time.

After taro is exposed to long-term sunlight, its skin will produce chlorophyll, a natural pigment that makes taro appear green.

In addition, when taro is exposed to sunlight, it will also promote photosynthesis, absorb energy from sunlight, and promote the growth of taro. Therefore, taro appears green after peeling, which is a normal phenomenon and will not affect its taste and nutritional value.