You should discard soak water and rinse produce again to remove any lingering dirt, pesticides, and bacteria that have been released into the water during the soaking process, ensuring cleaner and safer food.
Soaking produce is a great first step in cleaning, as it helps to loosen dirt, debris, and even some surface-level pesticides. However, the water itself becomes contaminated with these impurities. If you were to cook or consume the produce directly from the soak water, you'd essentially be reintroducing those contaminants back onto the food. Rinsing after soaking ensures that these dissolved impurities are washed away, leaving you with cleaner and safer fruits and vegetables. The rinsing action physically removes the contaminants that are now suspended on the surface of the produce. Think of it like washing your hands – you wouldn't just soak them in soapy water; you'd rinse them afterward to remove the soap and the dirt it lifted.
For leafy greens, consider using a salad spinner after rinsing to remove excess water. This helps prevent wilting and allows dressings to adhere better, improving the taste and texture of your salad.