Melt the fat and let it cool down a little. Beat eggs, salt and diabetic sweetener until creamy. Sift the flour over it and fold in. Fold in melted fat. Stir in lemon peel
Pour the mixture into a piping bag with perforated spout and squirt approx. 32 heaps onto a baking tray lined with baking paper (or place 2 teaspoons on top). Bake in a preheated oven (electric cooker: 175 °C / convection oven: 150 °C / gas: level 2) for 10-12 minutes. Take out and let cool down
Melt the chocolate in a hot water bath. Pour into a freezer bag, cut off the corner and decorate the cookies with strips (or use a fork or teaspoon to cover them). Drying
The cookies will keep for a while in a well-closed tin. Separate each layer with parchment paper