Blueberries going mouldy after two days? Same. But learning how to wash and store blueberries properly can keep them fresh for up to two weeks. This guide shows why a quick rinse isn’t enough, how a vinegar wash saves your fruit from fuzz, and the best way to store blueberries in the fridge or freezer. Stop wasting money on berries that spoil fast — keep them fresh and ready to snack on.