Make the special sauce. In a small bowl, whisk mayo, ketchup, mustard, relish, vinegar, paprika, sugar, salt, and pepper. Taste and adjust. Chill while you cook.

Prep your toppings. Shred the lettuce, slice the pickles and onions, and dice the tomatoes. Keep them ready for fast assembly.

Portion the beef. Divide 1 pound of ground beef into 8 loose balls, about 2 ounces each. Don’t pack them tight. Season with salt, pepper, garlic powder, and onion powder.

Warm the tortillas. Briefly heat tortillas in a dry pan just until pliable. This prevents cracking when you press on the beef.

Press beef onto tortillas. Lay a warm tortilla on a cutting board. Place a beef ball in the center and press it into a thin, even layer that almost reaches the edge. A piece of parchment and a flat spatula or the bottom of a pan helps. Repeat for all tortillas.

Heat the skillet or griddle. Use medium-high heat and a light film of oil. You want it hot enough to sear, not smoke furiously.

Cook beef-side down first. Place the tortilla beef-side down in the hot pan. Press lightly for maximum contact. Cook 2–3 minutes until the edges are browned and crispy.

Mustard sear (optional but great). While the beef cooks, brush or squirt a little yellow mustard on the exposed beef side before flipping for an extra tangy crust.

Flip and cheese. Flip so the tortilla is now down and the beef is up. Immediately top with a slice of cheese. Cook 30–60 seconds until the cheese melts and the tortilla is lightly toasted but still flexible.

Finish and stack. Move each taco to a tray. Add lettuce, pickles, onions, and tomatoes. Drizzle with the special sauce. Sprinkle sesame seeds over the cheese if you like the “burger bun” effect.

Serve hot. These taste best right off the pan—crispy, juicy, and melty. Have napkins ready.