In a small pot add the water, sugar and freshly squeezed lemon juice. Cook on medium low until sugar dissolves and then for another minute or two. Remove from heat and let cool slightly.
Add 250g frozen fruit and ¼ cup of the simple syrup to a personal size blender (it’s hard to do a small batch in a full sized blender) and blend until smooth, mix should be thick. Pour into mason jar and freeze for at least 4 hours.
Notes
Straight sided, wide mouth mason jars are freezer safe when not overfilled. They should not be placed in the freezer with hot liquid. See more here.