Takeaway is not all semi-finished products. According to relevant public information, 80% of the take-away market is pre-cooked, 60% of online restaurants are pre-cooked, and 95% of restaurants in major shopping centers use pre-cooked dishes. In order to save time and cost, some take-away merchants choose to use semi-finished cooking packages instead of fried cooking. These cooking packages are rich in dishes, each package is 3- 10 yuan, and some of them have a shelf life of up to one and a half years.