Bring plums to the boil with 8 tablespoons of water and a few drops of sweetener and cook over a low heat for about 8 minutes. Let it cool down. In the meantime, stir the soft fat, diabetic sweetness, salt and lemon peel until creamy. Stir in eggs one at a time. Sift flour over them and stir in. Stir in mineral water. Preheat waffle iron.
Coat the upper and lower baking surfaces with a little oil. Bake 8 waffles from the dough one after the other until golden brown. Take them out and let them cool down. Stir curd, sour cream, cinnamon and a few drops of sweetener until smooth. Serve the waffles with plum compote and cinnamon cream. Decorate with a mint leaf