Build the Dark Roux: Heat the oil in a large, heavy-bottomed pot over a medium flame. Whisk in the flour until smooth. Reduce the heat to medium-low and stir constantly with a wooden spoon. You are looking for a colour change from pale blonde to a deep, glossy milk chocolate brown. This will take 20-25 minutes. The smell will shift from raw flour to a nutty, toasted aroma. Do not rush this step; a burnt roux will taste bitter.

Sweat the Holy Trinity: Once the roux is the colour of an old penny, add the diced onion, bell pepper, and celery. The mixture will sizzle immediately. Stir and cook for 8-10 minutes until the vegetables soften and release their moisture. You will see the roux darken slightly around the edges of the pot, and the kitchen will fill with a sweet, earthy fragrance.

Bloom the Spices: Stir in the minced garlic, smoked paprika, dried thyme, and cayenne pepper. Cook for exactly 1 minute, stirring constantly. The spices will become fragrant and the roux will take on a deeper, reddish-brown hue. Be careful not to let the garlic brown.

Build the Broth: Slowly pour in the hot chicken stock while whisking vigorously to prevent lumps. Add the chopped tomatoes and bay leaves. Bring the mixture to a gentle boil, then reduce the heat to a low simmer. The liquid will be a rich, dark burgundy colour and smell intensely savoury.

Cook the Chicken: Season the chicken thighs generously with salt and pepper. Nestle them into the simmering broth, skin-side up. Cover the pot and let it simmer gently for 45 minutes. The chicken will become tender and the broth will deepen in flavour. You will see small bubbles breaking the surface, and the liquid will reduce slightly, becoming thicker and more velvety.

Add the Okra and Finish: After 45 minutes, carefully remove the chicken thighs to a plate. When cool enough to handle, shred the meat, discarding the skin and bones. Return the shredded chicken to the pot. Stir in the sliced okra. Simmer uncovered for another 15 minutes. The okra will soften and release its natural thickener, giving the gumbo a silky, almost glossy texture. The colour will be a deep, nearly black mahogany.

Poach the Prawns: Just before serving, increase the heat to medium-high. Add the prawns to the bubbling gumbo. Cook for 2-3 minutes, just until they turn pink and curl slightly. The sound will shift from a gentle simmer to a lively bubble. Do not overcook them; they should be plump and juicy. Taste the gumbo and adjust the salt, pepper, and cayenne to your liking.