Stir the lemon zest and sugar together so that the sugar absorbs the lemony flavour. Let sit for about 10 minutes. Combine all ingredients using a food processor or a pastry cutter until a dough forms. It may be a little crumbly, if that's the case, add a little lemon juice so that the dough sticks together a bit better. It'll still be crumbly. Form into a rough disc and wrap in plastic film. Refrigerate for about an hour to let the dough rest.

Remove from fridge and roll out to 1/4 inch thickness (a little less than 1 cm) and cut into shapes (I just did standard rectangles).

Refrigerate for another 10-15 minutes so that they keep their shape in the oven. Meanwhile preheat your oven to 350F.

Bake for 10-12 minutes until you start to see the bottom edges brown. Remove from oven and let cool on a wire rack. Store in an airtight container, and is best eaten with tea! =)