1. Appearance identification: the color of the real sweet potato vermicelli should be dark red, the surface should be shiny, the texture should be hard, and not easy to break. If the color is not correct or the surface is not shiny, it may be false.
2. Smell identification: real sweet potato fans should have a light sweet taste and no peculiar smell. If you smell a strange smell or no sweet taste, it may be false.
3. Taste discrimination: real sweet potato vermicelli should taste soft and not too greasy. If it tastes wrong or too greasy, it may be fake.
4. Price discrimination: The price of real sweet potato vermicelli is generally high, because the cost of sweet potato is relatively high, and processing is also troublesome. If the price is too cheap, it may be fake.
5. Brand identification: choosing a reputable brand to buy sweet potato fans can ensure the quality and safety of the product. It is recommended to know the reputation and evaluation of the brand before purchasing.