Grind the walnuts in a blender or with a rolling pin. Prepare a saucepan and baking dish. Place all ingredients in a visible place.
Prepare the syrup. Pour half the water into the saucepan and add half the honey (100 g). Place the saucepan on the fire and cook its contents for 20 minutes until a caramel color appears. Do not stir the resulting mass. After the caramel has formed, add the remaining honey (100 g) and water, cook over medium heat for 5 minutes until golden brown. Remove the syrup from the heat and let cool.
Prepare the phyllo dough. Sift the flour into a separate bowl. Take hot water and dissolve salt in it. Pour the liquid into the sifted flour, add olive oil and soda. Knead the dough and form it into a ball. Place the dough in the refrigerator for 60 minutes.
Prepare the dough layers. Divide the finished dough into 3 parts. Roll out each part with a rolling pin. You should get thin cakes with a diameter of 25 cm. Dust your hands with flour, take the rolled out layer of dough and with the back of your palms begin to stretch it by weight, carefully twisting the dough around its axis. Do this with each layer. Place the finished layers of phyllo dough on a dry, clean, flat surface.
Bake baklava. Preheat oven to 150℃. Cut the phyllo dough sheets in half. Then cut again to the size of the baking sheet or pan in which you will bake. Melt the butter and grease the baking dish with it. Place the first layer of dough, brush it with melted butter, add chopped nuts. Continue until all layers are finished. Bake the baklava in the oven at 150℃ for 60 minutes.
Finish cooking. Pour the prepared syrup over the baked baklava and place in the oven for another 5 minutes.
Serve the soup chilled for tea.