Harvest blueberries early in the morning - that’s when their flavor is strongest. [1] X Research source If you don’t freeze blueberries right after harvesting them, keep them cool in the refrigerator until you’re ready.
If the berries are washed before frozen, you can enjoy eating a frozen one without having to thaw it. If you’re planning to use the berries in a recipe for pie or another cooked dessert, washing them before freezing shouldn’t be a problem. If you decide to wash before freezing, rinse the berries gently and let them dry completely before freezing.
To use still-frozen blueberries for baking, there is no need to thaw. Simply put them straight into muffins and other baked goods. Bake as usual. This prevents the blueberries from being smashed while mixing them into the batter, and they end up being juicier and plumper in the finished product. They still become just as warm as the rest of the baked item. If you decided not to wash the berries before freezing, remember to do so once they have been thawed.