2, pay attention to the color, it is best to be purple, the color is red, it tastes tender, if the color is black, it may be seaweed every other year.

3, pay attention to uniform thickness, no obvious holes and missing corners, if there are holes, it may be improper storage during storage and transportation, which will damage and affect the quality. Good laver has a high density, so don't choose laver that will be scattered when pinched.

4. Pay attention to Chen laver. Now there are some illegal vendors in the market. After smearing Chen laver with edible oil every other year, they pretend to be new laver for sale. Buyou.com suggested that you can wipe it with handkerchief paper, because there will be oil stains on the paper, while laver Chen has no fragrance and the entrance smells of sea.

5. In addition, you can observe from the senses when buying, and pay attention to whether there is mildew, whether the packaging is firm, neat and beautiful, and whether the factory name, address, product name, production date, shelf life and ingredients are marked on the packaging.