I APOLOGIZE FOR THE TERRIBLE FIRST PHOTO!!!... Beat butter with sugar and grated lemon zest.

Add lemon juice, mix well.

Flour mixed with starch and salt. Add to liquid mixture. Mix well. Knead the dough.

Divide the dough in two and roll into two sausages with a diameter of approximately 4-5 see Wrap in plastic wrap and refrigerate for 1 hour (or overnight, like I did).

Sausage cut into disks with a thickness of about 0.5-0.7 mm. Put on a baking tray lined with parchment, at a distance of 2-3 cm from each other (cookies are practically not increased, since there are no eggs in the dough). Bake in preheated oven for 10-12 minutes at a temperature of 175°C.