# Put the margarine, which is softened at room temperature, into a deep bowl. Add
milk and egg white on it. Mix it well.
# Add vinegar and salt in it. Add
flour in it little by little, until it reaches to the consistency, which the dough does not stick to your hands. Knead it.
# For not changing the color of the dough, add the finely sliced parsley and crushed red
pepper into the mixture finally.
# Cover the prepared dough and rest it for half an hour.
# At the end of the resting time, divide the rested dough into 2 pieces. Roll out each of the pieces by a rolling pin into the thickness of back side of a knife.
# Spread the yolk all over the rolled out dough pieces by a brush.
Cut them into squares by a rolling zigzag knife.
# Place the square shaped pieces onto the greased baking tray, without spaces between them. Put 1 pinch grated kasar
cheese onto each of the cookies.
# Place the tray into the oven, which is preheated to 350 F, until they turn to red.
# Serve them cold.
