Heat the ½ cup aceite vegetal in a large Dutch Oven or heavy-bottomed Pot over medium heat. Once shimmering, whisk in the ½ cup harina para todo uso until smooth. Switch to a Wooden Spoon or heat-safe Spatula.

Cook the roux, stirring constantly and scraping the bottom of the Pot, for 25–35 minutes. You're aiming for a deep chocolate-brown color — like dark milk chocolate or a copper penny. Don't rush this step and don't walk away. If it smells burnt, reduce the heat.

Once the roux is dark and fragrant, immediately add the diced 1 cebolla amarilla picada, 1 pimiento verde picado, and 3 tallos de apio picados. The vegetables will sizzle dramatically — this is normal. Stir vigorously to coat everything in the roux and stop the cooking. Cook, stirring frequently, for 6–8 minutes until the vegetables soften.

Add the minced 5 dientes de ajo picados and cook for 1 more minute, stirring constantly, until fragrant.

Add the sliced 12 oz salchicha andouille rebanada en rodajas de ¼ pulgada to the Pot and stir to combine. Cook for 3–4 minutes to lightly brown the sausage and render some of its fat into the base.

Add the 1 ½ lb muslos de pollo sin hueso ni piel cortados en trozos de 1 pulgada, all of the spice blend ingredients (2 tsp condimento cajún, 1 tsp pimentón ahumado, 1 tsp tomillo seco, 1 tsp orégano seco, ½ tsp pimienta negra, ¼ tsp pimienta de cayena agregue más, 2 tsp sal kosher más, 2 tsp salsa Worcestershire, and 2 piece hojas de laurel), and stir well to coat everything evenly.

Pour in the 6 cups caldo de pollo bajo en sodio preferido and add the 1 lata tomates picados with their juices. Stir well, scraping up any bits from the bottom of the Pot. Bring to a boil over high heat, then reduce to a gentle simmer.

Simmer uncovered for 40–45 minutes, stirring occasionally, until the 1 ½ lb muslos de pollo sin hueso ni piel cortados en trozos de 1 pulgada are very tender and the gumbo has thickened and deepened in flavor. Skim any excess fat or foam from the surface as needed.

Stir in the 1 ½ cups okra congelada rebanada, descongelada and cook for 10 minutes. The 1 ½ cups okra congelada rebanada, descongelada adds both flavor and natural thickening to the gumbo.

Use fully peeled and deveined shrimp. If frozen, thaw overnight in the Refrigerator — never cook from frozen in a Skillet or released water will kill the sear. Pat shrimp completely dry with paper towels. Season with salt just before cooking; add paprika, garlic salt, or red pepper flakes if using. Have lemon, parsley, and butter measured and ready before the shrimp hit the pan — cook time is short.

Heat a large Skillet over medium to medium-high heat. Add enough olive oil, butter, or both to coat the pan. For garlic or red pepper flakes, add to the oil first and sauté 1–2 minutes until fragrant — don't let the garlic burn. Once the fat is hot and shimmering, add shrimp in a single layer. Don't crowd the pan or they'll steam instead of sauté — work in batches if needed. Cook without moving for 1.5–2 minutes per side, flipping once. Total time: 2–3 minutes for small shrimp, 4–5 minutes for large. Watch closely — they overcook fast. Optional: add a splash of wine, lemon juice, or broth once shrimp are nearly done. Let reduce about 1 minute. Finish with a squeeze of fresh lemon.