Place all ingredients in the blender, in the order listed above, and blend for a minute or two, until the berries have completely broken down into the cream.
Pour into the ice cream machine and freeze according to the manufacturer's directions. Serve immediately for soft-serve ice cream or transfer to an airtight container and freeze until firm.
Notes
Fresh berries will result in the lighter-colored ice cream pictured here. Frozen berries will result in the more deeply colored ice cream. Both versions are delicious, however, the frozen berries will produce a stronger blueberry flavor.