Usually, the color of sea cucumber is mainly bluish brown, but if sea cucumber grows in sediments or rocks, the surface color of sea cucumber will turn dark brown. To choose a good ready-to-eat sea cucumber, the first choice is a short and thick sea cucumber, which is slender and looks attractive, not necessarily a good sea cucumber. You can also choose ready-to-eat sea cucumbers by watching their spines. Usually, high-quality ready-to-eat sea cucumbers have straight spines and complete skins. And inferior, such as instant sea cucumber foamed with sodium hydroxide, will have "skin explosion" on the surface and thorns will be broken.

2. Smell:

High-quality sea cucumbers live in clean sea, so sea cucumbers themselves will have a fresh taste, which can be smelled when selecting ready-to-eat sea cucumbers. However, if you smell a little fishy smell or a strong smell of liquid medicine when selecting the ready-to-eat sea cucumber, it means that the sea cucumber has added formaldehyde, preservatives and other pharmaceutical ingredients in the foaming process, which belongs to inferior sea cucumber.

3. Feel the flexibility:

Feel the elasticity of sea cucumber with your hands. High-quality sea cucumber meat wall is solid, the meat quality is good, and it feels elastic. However, the inferior sea cucumber, due to the possible addition of chemical components in the foaming process, has fragile meat wall, damaged meat quality and poor elasticity.