Kelp is cold food.

Kelp is born on rocks at a depth of 2m below the low-tide line on the seashore, and artificially farmed to grow on ropes or bamboo materials. From the point of view of the growth environment, kelp belongs to the cold food. Kelp belongs to the sub-freezing zone algae, is the North Pacific endemic local species, the Atlantic Ocean also has some kelp distribution. Most of the kelp is distributed in the northern hemisphere, while the southern hemisphere also has a small amount of distribution, generally grows in the subtidal zone on the seabed rocks. The growth of kelp is mainly affected by temperature, light, nutrient salts and plant hormones.

Common cold foods include mung beans, kelp, mung bean sprouts, eggplant, bitter melon, tomatoes, cucumbers, bananas, watermelon, melon, winter melon, wild rice, watercress, water chestnuts, persimmons, millet, mulberries, kiwi fruit, and sugar cane.

Differentiation method of food properties

From the color point of view, green plants and the ground close proximity to the ground, absorbing ground moisture, so the nature of the cold, such as green beans, green vegetables. Color red plants, such as chili peppers, peppers, dates, pomegranates, etc., although close to the ground to grow, but the fruit can absorb more is sunlight, so the sex of the hot.

From the flavor point of view, the sweet, pungent food, because of receiving more sunlight, so the sex is hot, such as garlic, pomegranate, etc.. And those foods that taste bitter and sour are mostly cold, such as bitter melon, bitter vegetables, taro, plums, papaya and so on.

From the point of view of the growing environment, aquatic plants are cold, such as kelp, seaweed and so on. While some foods that grow in the land, such as peanuts, potatoes, yams, ginger, etc., due to long-term buried in the soil, the plant is resistant to dryness, contains less water, so the nature of hot.

From the geographical location of the growth, the back of the shade towards the north of the food absorbed moisture heavy, rarely see the sun, so the nature of the cold, such as mushrooms, fungus and so on. And some of the food grown in the air, or southeast of the food, such as sunflowers, chestnuts, etc., due to the acceptance of light and heat is more sufficient, so the sex of the hot.