Stuffed Fish With Pomegranate Sauce (Mahi-ye Tu Por Ba Anar)

Ingredients

• 2 pounds white fish, sea bass, halibut, cod, rockfish, or orange roughy
• 1 teaspoon salt
• 1/3 cup olive oil or butter
• 1 onion, peeled and thinly sliced
• 3 cloves garlic, peeled and crushed
• 1/4 teaspoon freshly ground black pepper
• 1/4 cup chopped walnuts
• 1 cup pomegranate juice or 3 tablespoons pomegranate paste
• 1 tablespoon slivered candied orange peel
• 2 tablespoons fresh lime juice
• 1/4 teaspoon ground saffron dissolved in 2 tablespoons hot water
• 1 tablespoon angelica petals or powder (gol-par), for garnish
• 2 tablespoons chopped walnuts, for garnish
• 2 tablespoons pomegranate seeds, for garnish