01 - Preheat oven to 350°F. Generously grease a 9x13-inch baking pan with melted butter.
02 - Combine walnuts, almonds, pistachios (if using), sugar, cinnamon, and cloves in a mixing bowl. Toss until evenly blended.
03 - Place first phyllo sheet in prepared pan. Brush lightly with melted butter. Repeat layering and buttering 6-8 sheets total for the bottom foundation.
04 - Sprinkle one-third of the nut mixture evenly across the buttered phyllo surface.
05 - Layer and butter 4-5 additional phyllo sheets. Spread another one-third of the nut mixture over the surface. Repeat with 4-5 more sheets and remaining nut filling.
06 - Arrange remaining phyllo sheets over the final nut layer, brushing each sheet with melted butter including the top surface.
07 - Using a sharp knife, cut completely through the layered pastry to create diamond or square portions before baking.
08 - Bake for 35-40 minutes until phyllo turns golden brown and achieves crisp texture throughout.
09 - While pastry bakes, combine sugar, water, and lemon juice in a medium saucepan. Bring to boil and cook for 8-10 minutes. Remove from heat, stir in honey and rose water or orange blossom water if desired.
10 - Immediately pour hot syrup evenly over the hot baked pastry. Allow to cool completely at room temperature so syrup absorbs fully before serving.