- Add the flour, salt, confectioner's sugar, lemon zest, cardamom, and butter to the bowl of a food processor until a dough forms. Add pistachios and pulse again until combined.
- Remove from the food processor and roll into a log of roughly 6cm (21/2inch)diameter and wrap in plastic wrap. Refrigerate overnight to allow the cardamom and lemon zestfully infuse.
- Then next day preheat the oven to 190 Celsius 375farenheit )and line the baking sheet with baking paper. slice the dough into some of the cookies piece and bake for 15to 20minutes until the edges begin to golden colour.
- Cool on the baking tray before transferring to a wire rack to cool completely.