1, the best way is to recommend live traffic, but this is very challenging and the technical cost is high. When you get off the boat, you should be oxygenated. The water must be seawater and treated with ice at a constant temperature. You can live for three days.

When you get fresh sea urchin, open the shell with a knife and take out the internal organs. Pay attention to this step, the knife will come apart if it is not good.

3. Then wash the sea urchin yellow with salt water for many times, soak it in alum water, drain the water, and put it into a tank for vacuum treatment.

4, or another kind is sealed with food-grade bags and refrigerated as above, and sterilized by the way.

5, take fresh goods, the temperature control during the period must be frozen for a long time, which greatly affects the taste.