雪燕是萍婆属植物的天然胶状分泌物的商品名，性质类似桃胶，主要产自热带和亚热带地区。从营养成分来说，雪燕由多糖等物质组成。不溶于水的大分子多糖能吸附大量水分子形成凝胶状，它们既不能被胃肠道消化吸收，也不能产生能量，所以可以通过延缓肠道对糖的吸收，降低机体对糖的摄取，以此降低体内的血糖，控制能量摄入。因此，雪燕可以作为糖尿病辅助治疗的食物。此外，作为膳食纤维的一种，吃点也可以起到缓解便秘和促进排便的作用。

Tragacanth Gum is the trade name of the natural gelatinous secretions of plants. It is similar in nature to peach gum and is mainly produced in tropical and subtropical regions.

In terms of nutrients, Tragacanth Gum is composed of polysaccharides and other substances. Macromolecular polysaccharides that are insoluble in water can absorb a large number of water molecules to form a gel. They can neither be digested and absorbed by the gastrointestinal tract nor produce energy. Therefore, they can delay the absorption of sugar by the intestine and reduce the body's sugar intake. In order to reduce blood sugar in the body and control energy intake. Therefore, Tragacanth Gum can be used as a food for adjuvant treatment of diabetes. In addition, as a kind of dietary fiber, eating more can also relieve constipation and promote bowel movements.

雪燕泡发倍数为30-50倍，所以一次不要泡太多。 准备一个较大的碗，将大约3-5克的雪燕放入其中，然后加入矿泉水或是凉白开，泡发6小时左右即可，中途可换2次水。

The multiple of Tragacanth Gum soaking is 30-50 times, so don't soak too much at a time. Prepare a larger bowl, put about 3-5 grams of Tragacanth Gum into it, then add in clear water, soak for about 6 hours, and change the water twice in the middle.

炖煮30至40分钟即可，切记不能炖煮超过1小时，否则雪燕会化成水

Simmer for 30 to 40 minutes, remember not to simmer for more than 1 hour, otherwise Tragacanth Gum will dissolve into soup