How to Make It
Preheat oven to 300°F. Line a rimmed baking sheet with parchment paper, and set aside.
Stir together melted butter, pomegranate molasses, jaggery, sumac, cayenne, salt, and, if desired, anardana in a medium bowl until a smooth paste forms. Fold in cashews, pistachios, and walnuts, and stir until evenly coated. Spread in a single layer on prepared baking sheet.
Bake in preheated oven until nuts are a light golden brown, 20 to 22 minutes. Remove baking sheet from oven, and let cool completely, about 1 hour. Store nuts in an airtight container at room temperature for up to 1 week.