Black beans in vinegar are mainly divided into black beans in vinegar with raw black beans and black beans in vinegar with cooked black beans,

Cooked soaking: the advantage of the fast but poor results, the loss of active ingredients. It needs to be stored in the refrigerator.

Practice: Place the black beans in a pan and cook them over medium heat until the skin bursts open, then cook over slow heat for about 10 minutes. Put the cooked black beans into a glass bottle, add the original vinegar, the two accounted for about 1 / 3 and 2 / 3 of the bottle. cool and seal the bottle lid, until the black beans absorbed the vinegar, after the expansion of the food can be eaten. The vinegar will grow a film on top over time, so throw away the film. If the vinegar is cloudy, replace the vinegar again. Place in a cool place or refrigerator to keep 10 days after the edible.

Raw soaking: the advantage is that the effect is good, but time-consuming, can effectively retain the nutrients. It can be kept without refrigerator.

Practice: wash the black beans, remove the impurities inside, put into a ventilated place under the sun to dry, then pour the black beans into a glass bottle, and then pour the original balsamic vinegar into the bottle, the vinegar bubbles over the beans, the bottle to leave one-third of the space, the purpose is to expand for the process of soaking the black beans to reserve enough space, and finally put the lid on the ventilated and cool place for 2 months, can be consumed, eat two spoonfuls every day, the bottle cover above the paste on the time label, you can check the soaking time.

The Compendium of Materia Medica recorded: "There are dozens of vinegar, only 2~3 years of rice vinegar can be used in medicine, and the others can only be used for food, but not for medicine. Rice vinegar has the function of eliminating carbuncle and swelling, softening and dispersing knots, lowering gas and eliminating food, killing the evil poison of fish, meat and vegetables. Lowering blood pressure, lowering blood fat, softening blood vessels, eliminating pigmentation, eliminating fatigue effect". It can be seen that vinegar soaked black beans to be effective, but also need to use aged 2 years of rice vinegar. Among them, Xiangxi Original Vinegar or Xiangxi Tribute Vinegar is the best vinegar to make black beans in vinegar.

In addition to emphasizing the need to use rice vinegar aged for more than 2 years, it is also necessary to use glass bottles, not plastic bottles, because if you use plastic bottles to soak, it is inevitable that the harmful substances in the plastic bottles will be integrated into the vinegar after a long time.