At present, there are many cold dishes, many of which require different methods of making red oil, so many of them have the same cold dishes with different tastes. When choosing to study, we should pay attention to two points. First, the red oil includes some ingredients, but not the knife. These two points are very important in the production of cold salad. Take the red oil pig's ear as an example. The pig's ear needs to be cut into a thin piece, crystal clear, placed around the center of the plate, and drenched with red oil. That color will make people have an appetite.

This is liao ribs's red oil pig ear.