Method 1: Look at the shape and texture.

The true bird's nest is a filamentous structure, which is translucent whether it is soaked or viewed under light. At the same time, the texture of the true bird's nest should be a little bit, the color should be light gray or yellowish, and the color should be different. If the shape is made of a block structure, it is false.

Method 2: Smell the taste

The real bird's nest smells a faint fishy smell and musty smell, but it usually only needs ventilation, and it won't smell like this after soaking. If you smell other smells, you should pay attention. At the same time, after stewing the soup, it will give off a clear fragrance of protein. If it is other flavors, you should pay attention.

Method 3: See if it is filiform after soaking.

Take a small piece of bird's nest and soak it in water for a while, then take out the silk strips and pull them. If the elasticity is poor, it will break as soon as it is pulled. Or rub it with your fingers. Those that have no elasticity and can be rubbed into paste are also fakes.