How to make
Sift the flour into a deep bowl. Add the butter, powdered sugar, grated lemon peel and egg yolks.
Gradually knead a soft butter dough, which you need to shape into a ball and wrap with fresh foil. Refrigerate it for at least 2-3 hours.
If the dough is very dry and crumbly, add 1 more egg yolk.
Roll out the chilled dough onto a floured surface, by thinning the crust to 0.2″ (5 mm).
Cut out circles and in half of them, cut out additional figures with small cookie cutters - hearts, stars, flowers and others.
Arrange all the cookies on a tray lined with baking paper and put it in an oven heated to 340°F (170°C) for about 8 minutes.
Once they have cooled, stick the cookies together with jam of your choice.
The traditional linzers with marmalade are ready.