1. Look at the appearance: the real fish roe is covered with thick mucus, and the fish roe is connected with the mucus, with uniform particle size; After freezing, the fake fish roe will be separated from the surrounding liquid, forming an oil film floating on the surface, and the skin of the fish roe is dry and the particle size is uneven.

2. Smell: the real fish roe has a strong fishy smell, and the fine product has a delicate flavor; The fake fish roe has a fresh flavor when it is opened, but the fishy smell is weak.