When using a food dryer, it is important to pay attention to some operating points. Firstly, it is necessary to select appropriate temperature and time, and set the drying time and temperature according to the type and degree of processing of the food. Secondly, it is important to keep the dryer clean, as a large amount of dust is generated during use. If not cleaned in a timely manner, this dust may affect the quality and taste of the food. Finally, pay attention to the freshness of the food and choose fresh food for drying, which can ensure a better taste of the dried food.

However, food dryers also have some drawbacks. For example, some foods may become harder or chewy after drying, affecting the taste experience. Under high temperature and prolonged drying, some nutrients can be destroyed, reducing their nutritional value. In addition, the purchase cost of food dryers is relatively high, and the usage cost, including electricity bills, needs to be considered.