Most people in northern China like to eat raw yellow sauce, such as green onion dipping sauce and lettuce leaf dipping sauce. It is convenient and has a unique flavor. But from the point of view of paying attention to food hygiene, this way of eating is unscientific and unhygienic.
This is because: in the process of sun-curing and fermentation, all kinds of yellow sauce often fall into some dirt and are inevitably contaminated with some microorganisms; After the yellow sauce is made, it is also easy to be polluted in the process of transportation, storage and sales. In addition, yellow sauce often needs to be preserved for a long time, and it is also easy to cause bacterial growth. It can be seen that it is unsanitary to eat raw yellow sauce. In order to keep healthy, people who love yellow sauce had better fry yellow sauce and dip it in washed green onions, shallots or various vegetable leaves.