The sticky substance cooked by kelp is normal, which is collagen contained in kelp and has no harm to human body. Different varieties of kelp and whether the impurities are cleaned up during kelp processing may lead to a large number of sticky substances being boiled. Therefore, before stewing kelp, users are advised to clean it first, then soak it in boiling water for more than half an hour, and then wash it again, so as not to affect the taste.
Extended data:
Precautions:
1, kelp can not be soaked for a long time: kelp should not be soaked for a long time before eating. Generally speaking, soaking for about 6 hours is enough, because the soaking time is too long, the nutrients in kelp, such as water-soluble vitamins and inorganic salts, will also be dissolved in water, and the nutritional value will be reduced. If kelp is as tough as boiled after soaking in water, it means it has gone bad and can't be eaten any more.
2, don't take kelp as the staple food: you can't take kelp as the staple food for a long time, so too much iodine intake will also affect your health. Moreover, kelp contains a certain amount of arsenic, and excessive intake of arsenic will cause poisoning. Therefore, before eating kelp, wash it with water and let arsenic dissolve in water.
3. Don't drink tea and eat fruit immediately after eating kelp: Don't drink tea immediately after eating kelp (tea contains tannic acid) and don't eat sour fruit immediately (sour fruit contains vegetable acid). Because kelp is rich in iron, the above two foods will hinder the absorption of iron in the body.
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