A teaspoon of white distilled or cider vinegar added to the water in which you boil potatoes will keep them nice and white. You can keep peeled potatoes from turning dark by covering them with water and adding 2 teaspoons of vinegar.
Does the Short-Term Use of Continuous Glucose Monitoring Detect Favorable Effects of Vinegar Ingestion at Mealtime in Adults with Prediabetes? A Pilot Trial
Clinical trials suggest that daily vinegar ingestion improves fasting blood glucose concentrations, postprandial glucose excursions, and hemoglobin A1c levels in