Combine berries and sugar in a blender; process until smooth and sugar has dissolved (about 1 minute).

Add the buttermilk and dash of vanilla, process until well blended. Add the lemon juice and pulse to mix.

Chill in fridge for about 1 hour. Pour into freezer can of an ice-cream maker, process according to manufacturer's instructions.

Serve immediately or place covered in freezer until desired consistency is reached (I like mine after about 3 hours). Enjoy!