50 g of the apple, preferably with the skin, finely grate or grate. Rinse the blackberries briefly if necessary. Coarsely puree both in a vessel with erythritol bronze and cinnamon. Taste to see if there is still any sweetness missing.
Layer in glasses alternately, make natural yoghurt, blackberry-apple, etc., about 3 layers. The top layer should be blackberry apple. Decorate with a wooden stick.