Specialist Doctor 2 Huynh Tan Vu, Head of the Day Treatment Unit, University of Medicine and Pharmacy Hospital - Campus 3 (HCMC), said that xu xoa or sương sa is made from agar (seaweed). This type of seaweed grows naturally in coastal areas, and is a precious resource that nature has given us. Summer is usually the season for harvesting agar, around March - October of the solar calendar.
When picking seaweed, people will wait for the tide to go down, the seaweed will rise above the water surface to choose the delicious and big ones, they can use their hands to scoop or use an iron rake to rake; in deep water, they dive down to rake. After picking, people will smash the snail shells, clam shells, and sand on the seaweed, continue to clean with water many times, until the seaweed is white, then dry it in the sun for later use.
Agar has a sweet, salty taste, cool, slippery, benign, has the effect of clearing heat, detoxifying, laxative, diuretic, etc. Agar is often processed into a cool dish called xu xoa with a strong sea flavor.
Cool summer heat-relieving xu xoa
"Xu xoa contains a lot of protein, fiber, minerals, vitamins and nutrients such as calcium, protein, DHA, folate, iodine... very good for all ages, especially pregnant women, the elderly and children, people who have just recovered from illness", Dr. Vu shared.
Xù xoa contains a lot of fiber and mucus, which helps you feel full longer, which is very good for people who want to lose weight, stay in shape and fight obesity. In addition, this dish also helps enhance thyroid function thanks to its abundant organic iodine content. This is an important micronutrient for the thyroid gland to synthesize hormones that regulate the body's development, maintain energy for the body to function, regulate muscle function and metabolism. However, people with hyperthyroidism should not eat seaweed, which can easily make the condition worse.
Seaweed supports digestive function, cures constipation and some intestinal diseases thanks to its cooling, heat-clearing, laxative properties and excellent source of fiber in seaweed. Studies show that seaweed has antioxidant and anti-cancer properties, preventing the development of colon cancer and breast cancer. Calcium and minerals in seaweed help prevent osteoporosis, strengthen tendons and bones, and prevent dry joints.
Seaweed also helps reduce cholesterol levels, stabilize blood pressure and improve cardiovascular health. Children with heat rash, acne, loss of appetite, eating xu xoa helps improve heat rash and acne.
Agar is the main ingredient to cook xu xoa dish.
Note when eating xu xoa, do not eat too much. Because the iodine content is high in xu xoa, eating too much or eating too often will affect the activity of the thyroid gland, causing excess iodine, leading to the risk of hyperthyroidism. Pregnant and lactating women eating too much xu xoa is not good. Xu xoa has a cold, cooling effect, so in some cases, eating too much will cause cold stomach, diarrhea, especially for young children, people with a history of allergies to seaweed and other seafood. People with hyperthyroidism should avoid eating seaweed, agar, xu xoa.
To promote the benefits of xu xoa, we can choose to buy quality seaweed to make it ourselves or buy xu xoa drinks at shops that ensure food hygiene and safety.
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