Ingredients  For Hard Cookies  1 stick unsalted butter in room temperature  2 eggs ( yolk is to be put on top of the sekerpare )  5 tbsp semolina  5 tbsp powdered sugar  1 package or 1 tbsp vanilla  1 package or 1 tbsp baking powder  1/2 cup of whole nuts ( almond or hazelnut )  Flour as you need ( approx. 4 cups )  For syrup  2 cups of sugar  2 cups of water  2 tbsp lemon juice  Directions;  1-Boil 2 cups of sugar and 2 cups of water in a pot for 5 minutes.Then add lemon juice. Let the liquid boil a few more minutes and set a side and let it cool down.  2- In a mixing bowl, add  egg whites on to the butter which is softened in the room temperature.  3-Then mix semolina, powdered sugar, baking powder and vanilla. Make a pure mixture by hand.  4-Add flour little by little until you get soft dough. ( like earlobe)  5- Brake off small pieces, walnut size, from dough round and flatten them.  6- Set them on the an oiled cookie sheet.  7- Brush the top of cookies with egg yolk and put wh...