1. The kelp itself is cold according to traditional Chinese medicine, so people with cold spleen and stomach, do not eat too much kelp at a time, or with some cold substances with, otherwise it will cause gastric discomfort.

2. Due to global water pollution, kelp is likely to contain toxic substances - arsenic, so before cooking should be soaked in water for two to three hours, the middle of the water once or twice, but do not soak too long, up to 6 hours, so as to avoid excessive loss of water-soluble nutrients.

Above