Why you should stop marinating your flank steak before you start grilling it
In short: Conventional wisdom suggests soaking meat in marinade for hours to infuse flavor, but this method often fails to penetrate deep into the muscle. By applying a vibrant guajillo chile marinade after the steak is seared and sliced, you preserve the integrity of the crust while ensuring every bite is coated.
The secret to a superior flank steak taco lies in flipping the traditional marination process on its head. Most home cooks apply acidic or oil-based marinades before cooking, which can hinder the Maillard reaction—the essential browning process that creates deep, savory flavors on the surface of the meat. By searing the steak first, you achieve a perfect, crusty exterior that provides a satisfying texture contrast to the tender interior.
To prepare this dish, start by creating a guajillo chile puree. Toast four dried, seeded chiles in a cast-iron skillet for about a minute per side, then rehydrate them in hot water for 30 minutes before blending until smooth. This base is combined with toasted garlic, apple cider vinegar, oregano, sugar, and salt to form a complex, shelf-stable marinade. The resulting sauce is potent enough to stand on its own without needing hours of soak time to penetrate the fibers of the beef.
When you are ready to cook, season the flank steak liberally with salt and pepper. Sear it in a ripping hot cast-iron pan until it reaches an internal temperature of approximately 150 F, which is ideal for a medium finish. Crucially, allow the meat to rest on a cutting board for five minutes before slicing. Once sliced into bite-sized pieces, toss the beef directly with the prepared guajillo marinade. This technique ensures the bold, smoky flavors of the chiles remain bright and fresh, rather than being dulled by the high heat of the grill or pan. Serve immediately, perhaps topped with a fresh cilantro salad for a final layer of brightness that cuts through the richness of the steak.
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- Summary by Intellect · source: Taco Tuesday EP.2 // Marinated (after grilling) Flank Steak + Cilantro Salad
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