Gelidium, also known as sea frozen vegetables, red silk, phoenix tail and so on, is a kind of red algae. It is transparent, like jelly, crisp and tender, and can be mixed with cold dishes to make jelly. Gelidium is also the main raw material for extracting agar. Agar, also known as watercress, starch and gelatin, is an important plant gum, which belongs to fiber food and can be dissolved in hot water. Agar can be used to make cold food, jelly or microbial culture medium. Efficacy: Gelidium can absorb water in the intestine, make the intestinal contents swell, increase the amount of stool, stimulate the intestinal wall and cause defecation. Therefore, people who are often constipated can eat some cauliflower properly. Gelidium is rich in minerals and vitamins, especially alginate, which has antihypertensive effect, and starch sulfate, which is polysaccharide, has lipid-lowering effect and has certain preventive and therapeutic effects on hypertension and hyperlipidemia. Traditional Chinese medicine believes that cauliflower can clear lung, eliminate phlegm, clear away heat and dampness, nourish yin and reduce fire, cool blood and stop bleeding, and has the effect of relieving summer heat. It will be very cold, don't you think?