Instructions

1. 1
   Mix chopped pistachios with sugar and rose water.
2. 2
   Mix chopped walnuts with sugar and cinnamon.
3. 3
   Combine the chopped dates and water in a pot. Bring to a boil, squashing the mixture against the side of the pan with a wooden spoon until approximately uniform in consistency. Mix in the butter if using. Blend with an electric chopper if desired to make a smoother paste. Allow to cool.
4. 4
   Sift the flour into a mixing bowl. Mix with the white sugar, and a pinch of salt if desired. Some people add a very small quantity of baking powder.
5. 5
   Work in the butter until the consistency is as uniform as possible; one way is to heat the butter in the microwave first until it is nearly melted, and then mix it with the flour into a sort of crumble. Cover and leave at room temperature for several hours to overnight.
6. 6
   Break up the dough with your fingers, and add the rose water or orange flower water and 2 tbsp water or milk until it is malleable. Knead the whole into a smooth ball.
7. 7
   Take a walnut-sized ball of the dough, stick your thumb into it, and hollow out into a cup shape so that the walls are as thin as possible without breaking.
8. 8
   Insert filling to about three-quarters full, and pinch the aperture closed. Pat gently into a ball, not letting the walls break.
9. 9
   Decorate the ball on top with tweezers or the prongs of a fork. Alternatively, pat it into a wooden mould and flatten the exposed bottom surface, then bang the mould face down on the work surface to extract the moulded pastry.
10. 10
    Repeat the assembly steps until all the dough and the filling is used. If at any stage the remaining dough shows signs of drying out, knead in a little more water or milk.
11. 11
    Place the pastries on an ungreased baking sheet and bake in a preheated oven (180°C / 355°F; 160°C if a fan oven) for 20 minutes: they must not be allowed to become hard or brown. In fact they should look a little moist and underdone when removed from the oven: they will steam off and harden as they cool.
12. 12
    Leave the pastries to cool, and dust with icing sugar when cold. Keep in a sealed plastic box or biscuit tin.