Yes, after the black beans are soaked, add vinegar higher than the black beans and make it up once or twice until the black beans are saturated. Then add one and a half inches of black beans and make them according to the above method until the bottle is full. Finally, persimmon vinegar was poured into the hole and the black beans were completely submerged. When you eat it, you don't have to cook it. You can eat a spoonful of persimmon vinegar and soybeans at every meal. This can achieve a good slimming effect in a short time. (The cave persimmon vinegar is for a better taste)