In the Ming Dynasty, Chenghai County Records stated: "The products and fruits include olives, and those that are small and sharp are better." "Vegetables have mustard greens, which can be salted." Skillful and skillful women in overseas Chinese hometown in Chenghai make full use of local olive and pickled mustard leaves (commonly known as pickled mustard leaves) and cook them into black olive vegetables, which can stimulate appetite, help digestion and increase appetite.
The traditional production technology of black olive vegetable is: clean olive, soak and rinse with clear water, and filter off sour water; Then select salted pickles, chop them with a knife, put olives and mustard leaves into an iron pot, add peanut oil and proper amount of salt, cook them with slow fire until they are almost cooked, add chopped red pepper, garlic, a little sesame seeds, peanut kernels and other auxiliary materials, mix them evenly, and cook for five minutes.