How can I properly freeze blueberries to preserve their freshness and flavor for a longer period of time?

To properly freeze blueberries, first wash and dry them thoroughly. Then spread them in a single layer on a baking sheet and freeze until solid. Transfer the frozen blueberries to a resealable plastic bag or airtight container, removing as much air as possible before sealing. Store in the freezer for up to a year to preserve their freshness and flavor.