Identification method of true and false bird's nest: Appearance observation: Authentic bird's nest is filamentous, loofah-like, horny, with occasional down, firm and tough, and translucent to light. The fake bird's nest is granular, slag-like, crisp, featherless, pink and white, and opaque to light. Dissolution in boiling water: Authentic bird's nest swells after being dissolved in boiling water, making it soft, bright and transparent. The fake bird's nest is loose and dissolved, and its color is white and turbid. Fire test: genuine bird's nest can burst slightly, and after melting, it has foam, is smokeless and tasteless, and is gray; The fake bird's nest bursts and sparks, emitting black smoke, with a burnt smell, and the ash is black. You can go to the brand bird's nest chain store to buy it, which is generally genuine. I often buy Shangguan Yan's bird's nest, which is very good, of good quality and upright.