Mash the mozzarella and kaymak (mascarpone) with a fork and mix.
Place two Yufka on top of each other and put 1/4 (approx. 30 g) of the mozzarella-kaymak mixture in the middle
to distribute.
One to two tablespoons of ground pistachios and three to four teaspoons of sugar are then sprinkled on top. Then close the Yufka leaves like a bag. Drizzle the ends with a little water to keep the pastry sheets together.
Grease a coated pan with oil and bake katmer (mascarpone) on both sides.