A First Class stamp http://xtube.in.net/ x-tube Wash the blueberries and put them in a blender with the cooled syrup and all the other ingredients. Blend to a purée, then strain. Churn in an ice-cream machine until firm, or follow the still-freezing method. Put in a sealed container and cover the top of the sorbet with waxed or grease-proof paper. Transfer to the freezer until needed.