A regal preparation of whole fish, deep-fried until crisp and then enveloped in a rich, spiced yogurt-and-onion coating before baking. It is deeply aromatic, savoury, and succulent with a buttery finish.
Preheat the oven to 150°C (300°F). Score three deep diagonal cuts on each side of the 1000 g fish, cleaned, and lay it in a wide dish.
Stir the marinade spices into 61.2 g lemon juice and add salt to taste. Spread this paste thoroughly over the fish, working it into the incisions, and leave to marinate for 5 minutes.
Pour enough vegetable oil for deep-frying into a heavy pot and bring it to 180°C (350°F). Ease the fish into the hot oil, lower the heat slightly, and fry for about 4 minutes until crisp and golden on both sides. Transfer with a slotted spatula to drain on paper towels.
Whisk together the spice paste aromatics, 100 g fried onion paste, 254 g plain yogurt, and salt to taste in a bowl until uniform.
Warm 137 g vegetable oil in a large skillet over medium heat, tip in the yogurt mixture, and fry for 2 to 3 minutes until droplets of oil separate on top. Stir in 1 tablespoon chickpea flour, roasted, and cook for another 2 to 3 minutes.
Take the pan off the heat. Stir in the finishing spices, 0.5 teaspoon coarsely ground, roasted spice, and salt to taste.
Lightly oil a large roasting pan with vegetable oil and position the fried fish in it. Slather half of the cooked spice paste over the top surface, turn the fish, and coat the underside with the remaining paste. Cover and bake for 20 minutes, brushing regularly with melted butter.
For crisping batters or binding cutlets: use 50% to 60% of the weight. Produces a very crisp shell but lacks the earthy, roasted nutty flavour of besan.
Use 50% of the weight mixed with equal parts ground coriander and a pinch of ground cinnamon, ground cloves, and ground green cardamom. Sprinkle near the end for a warming finish.
Grate whole nutmeg finely on a microplane; use 80% to 100% of the weight. Freshly grated nutmeg has significantly more aromatic oils and a more vibrant aroma.
Use 100% to 120% of the weight. Mace is nutmeg's outer husk, providing almost identical warmth but with a lighter, slightly more delicate, floral edge.