Flaky, all-butter golden pastry filled with a delicately spiced sweet filling, baked until crisp and aromatic.
Cook the onions in 2 tablespoons of oil over low heat for 20 minutes until deep golden, then stir in 1/2 teaspoon of the cumin and the sumac.
Toss the fish with the remaining cumin, the paprika, and salt, then coat lightly in flour.
Shallow-fry the fish in hot oil for 3-4 minutes until crisp and golden, then drain.
Whisk the tahini, lemon juice, garlic, and 4 tablespoons of cold water into a smooth sauce.
Spread the caramelised onions on a platter, top with the crisp fish, and serve the tarator alongside for dipping.