The vinegar and water solution destroys bacteria and mold spores, helping the berries last longer. Here are the instructions for the best way to wash, dry, and store berries:
1. Wash berries in bowl with 3 cups water mixed with 1 cup white vinegar. Drain in colander and rinse under running water.Alternately, you could just dunk berries in hot water to give them a few extra days of mold-free life, but the vinegar rinse might be more effective. Reddit user am4zonreports that using a vinegar rinse helps raspberries last a week or more and strawberries almost two weeks.
2. Place berries in salad spinner lined with 3 layers of paper towels. Spin for 15 seconds or until berries are completely dry.
3. Store berries in paper towel-lined sealable container, keeping lid slightly open to allow excess moisture to escape.