Weight loss studies have found the optimum amount of apple cider vinegar to drink.
One study found that two tablespoons a day helped adults lose 3.7lbs over three months without changing up any other aspect of their diet.
Another study found those who were dieting lost double the amount if they took two tablespoons of apple cider vinegar a day.
Two tablespoons amounts to 30ml.
Of course, eating a healthy diet and exercising are also key to weight loss.
Apple cider vinegar has a number of other benefits, including for digestion.
Drinking the acid before protein heavy meals can help the body breakdown protein more easily.