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一、燕窝为不整齐的半月形,,凹陷成兜状,表面黄白色或灰白色、附着于岩的一面较平,加一面微隆起;假燕窝一般为半球形,表面淡黄或黄白色,一面微隆起.另一面微凹陷.二、燕窝内部粗糙,呈丝瓜络样,放大镜下可见细小羽毛;假燕窝内部粗糙似渣,放大镜下看不到细小羽毛,有的甚至可见皮毛.三、燕窝质硬脆,断面微显角质样,味微甜;假燕窝质松脆、易碎、味淡.
First, the bird’s nest is irregular nebula, hollow into a pocket, the surface yellowish white or gray, attached to the rock side is flat, plus a micro uplift; false bird’s nest is generally hemispherical, the surface yellow or yellowish white, one side Micro uplift, the other side of the micro-depression. Second, the bird’s nest interior rough, loofah-like, small feathers can be seen under a magnifying glass; rough bird’s nest like rough interior, can not see the small feathers under the magnifying glass, and some even visible fur. Hard and brittle, cross-section micro-horny-like, slightly sweet taste; false bird nest crisp, brittle, light taste.