Washing produce under running water effectively removes dirt, pesticides, and bacteria by continuously flushing them away, preventing recontamination that can occur when soaking in still water.
When you soak produce in a bowl of still water, the dirt, pesticides, and bacteria that are initially washed off can contaminate the water. As the produce sits in this contaminated water, it can reabsorb some of these unwanted substances. Running water, on the other hand, continuously carries away the contaminants as they are washed off. This ensures that the produce is being cleaned with fresh, clean water throughout the entire washing process. The force of the running water also helps to dislodge dirt and debris more effectively than simply soaking. Think of it like rinsing your hands – you wouldn't wash them in a sink full of dirty water, would you? The same principle applies to washing fruits and vegetables.
For produce with thick skins or crevices, use a vegetable brush under running water to scrub away stubborn dirt and debris. This is especially helpful for items like potatoes, carrots, and melons.