01 - In a small bowl, combine mayonnaise, ketchup, mustard, diced pickles, white vinegar, smoked paprika, and a pinch of sugar. Stir until fully incorporated and refrigerate until ready to use.
02 - Divide the ground beef into 8 equal portions and gently roll each into a loose ball without overworking the meat.
03 - Set a large non-stick skillet or griddle over medium-high heat and allow it to come to temperature before adding any beef.
04 - Place 2 beef balls on the hot skillet per batch. Lay a flour tortilla over each ball and press firmly with a sturdy spatula, spreading the beef thin across the underside of the tortilla with the meat contacting the pan.
05 - Distribute kosher salt, black pepper, and garlic powder evenly over the exposed beef surface.
06 - Cook for 2 minutes, pressing down occasionally, until the beef edges develop a crisp crust. Flip so the tortilla side contacts the pan, then scatter shredded cheddar over the beef. Cook 1 additional minute until the tortilla is golden and the cheese is fully melted.
07 - Work through the remaining beef balls and tortillas in batches, following the same smash, season, and flip process.
08 - Top each prepared taco with shredded iceberg lettuce, diced tomato, finely diced red onion, sliced dill pickles, and a generous drizzle of the reserved burger sauce.
09 - Plate the tacos right away and serve while the beef edges are still crisp and the cheese is hot.