Finely grind the almonds and lemon peel using a drum grater.
Knead together the flour, syrup, sugar, butter, ground almonds, ground lemon peel, cinnamon powder, clove powder, cardamom powder, and baking soda. The dough will be dry; lightly moisten your hands with water as needed while kneading until well combined.
Roll out the dough and cut into shapes as desired. Bake for 12-15 minutes at 160°C (320°F) for a gas oven, or 180-195°C (356-383°F) for an electric oven.