Steamed Halibut with Sothi

Name: Steamed Halibut with Sothi
Ingredients: 2 tablespoons vegetable oil; 2 shallots, sliced; 1/2 cup sliced onion; 2 tablespoons ghee or clarified butter; 1 clove garlic, sliced; 1 tablespoon minced ginger; 1 green chile, minced; 1 1/2 tablespoons hot curry powder; 3 fresh curry leaves* (See Cook's Note); 1/2 teaspoon mustard seeds; 1/2 teaspoon fennel seeds; 1/2 teaspoon ground turmeric; Pinch saffron; 2 cups fish stock, recipe follows; 13 1/2 ounces canned coconut milk*; 2 tomatoes, cut in quarters; 1 teaspoon kosher salt; 1 tablespoon lime juice; 1/2 cup heavy cream; 2 cups basmati rice; Kosher salt; 6 star anise; 2 stalks lemon grass, white part only, chopped; 2 (1-inch) pieces fresh ginger, sliced; 2 oranges, sliced; 2 pounds halibut, cut into 6 portions, skin and bones removed; 2 teaspoons kosher salt; 1/2 teaspoon freshly ground black pepper