Wash the berries gently under cold water
Remove stems, leaves, and any damaged berries
Pat the berries completely dry with a clean towel or paper towels
Spread the berries in a single layer on a baking sheet
Freeze the baking sheet until the berries are solid
Transfer the frozen berries to airtight freezer bags or containers
Remove as much air as possible before sealing
Label the bags or containers with the date
Store the berries in the freezer until needed