01 - Preheat the oven to 340°F. Grease a 9x13-inch baking dish with a little melted butter.
02 - In a bowl, combine all ingredients for the nut filling: walnuts, pistachios, almonds, cinnamon, cloves, and sugar. Mix well.
03 - Unroll the phyllo dough and cover with a lightly damp cloth to prevent drying out.
04 - Place one sheet of phyllo in the baking dish and brush lightly with melted butter. Repeat with 7 more sheets, brushing each layer with butter (total 8 sheets).
05 - Sprinkle 1/3 of the nut mixture evenly over the phyllo.
06 - Add 4 more sheets of phyllo, brushing each with butter. Sprinkle another 1/3 of the nut mixture.
07 - Add another 4 sheets of phyllo, each brushed with butter. Sprinkle remaining nut mixture.
08 - Finish with the remaining 4 sheets of phyllo, each brushed with butter. Brush the top generously.
09 - Using a sharp knife, cut the assembled baklava into diamond or square shapes.
10 - Bake for 45-50 minutes, until golden and crisp.
11 - While baklava bakes, prepare the syrup: Combine sugar, water, honey, cinnamon stick, and lemon peel in a saucepan. Bring to a boil, then simmer for 10 minutes. Remove from heat and let cool slightly; discard cinnamon stick and lemon peel.
12 - As soon as baklava comes out of the oven, slowly pour the warm syrup evenly over it. Allow to cool completely before serving.