Generally, sweet potatoes are used to make starch, and then steamed into vermicelli. Generally, the cheaper sweet potato vermicelli is basically made of cheap corn flour and cassava flour, and a considerable part of it is made of corn starch mixed with edible gum. Such fans are very cheap. When you ask why it's cheap, the merchant will tell you that it's made of cassava flour, which doesn't affect the taste. The colors of different vermicelli are really different, and the prices are also very different. There is even a difference of more than two yuan per kilogram. Slices are made of starch, which itself is very strong and cannot be made with glue! Such as potato starch, corn starch, cassava starch, mung bean starch, etc.

From its name, we can roughly know its function: it can increase the consistency and viscosity of food, form gel, and make food obtain hard, soft, brittle, sticky and thick shapes and tastes. Vermicelli is not made of edible glue. Let's just say that the vermicelli sold outside is added with food glue. We all process our own fans. Just want to eat the impossible real sweet potato vermicelli, and tell you clearly that without real sweet potato vermicelli, you can't eat it for ten yuan a catty. In addition, the processing of sweet potato powder is complicated and the cost is high. Now it is about per catty 15 yuan, while rubber powder is about 3 to 4 pieces.

It can be divided into sweet potato flour, sweet potato flour, corn flour and cassava flour. Because of the price, in order to reduce the cost and meet the needs of customers, many vermicelli factories now turn the kneaded noodles into strips with molds, cook them in a pot and hang them in cold water. After freezing overnight, you can wash it with clear water and dry it. It is troublesome to do it manually. Now it is basically a machine. When a large number of sweet potatoes are on the market, the price is 50 to 60 cents per catty. Just push it back. The cost of sweet potato vermicelli per catty is about 4 yuan, and the cost of starch processing is about 50 cents per catty. In the past, its production technology mainly included that all parts of the country had their own unique ways of processing ingredients.