2, the appearance is too bright, don't buy it, he added vegetable oil and a lot of sugar.

3, soaking in water to give color, can not judge whether it is true or not, can only judge whether there is added pigment. Artificial coloring on paper towels is different from real fruit color. The simple way to judge is to keep the fruit color, but not to keep it artificially (this depends on experience, you have to find your own feeling and get some fruit color on the paper towel).

4. Soak dried blueberries in clear water. If there are gray floating objects on it, don't buy it. They are added with preservatives.

5. Anything below 150 yuan is problematic, and a lot of sugar and vegetable oil or preservatives are added. Many production licenses and product standards are inconsistent with the company name, which is stealing from others.