Prepare the Sauce: In a medium saucepan, combine the tomato ketchup, apple cider vinegar, brown sugar, Worcestershire sauce, smoked paprika, garlic powder, onion powder, cayenne pepper (if using), and water. Stir everything together until well combined. Bring the mixture to a gentle simmer over medium heat, then reduce the heat to low and let it bubble gently for 15-20 minutes, stirring occasionally. You'll notice the sauce thickening and darkening slightly, taking on a rich, glossy appearance and a wonderfully fragrant, tangy aroma.

Form the Patties: In a large mixing bowl, combine the beef mince, smoked paprika, garlic powder, onion powder, and black pepper. Use your hands to thoroughly mix the ingredients until just combined – be careful not to overmix, as this can make the patties tough. Divide the mixture into four equal portions. Shape each portion into an elongated, oval-like patty, roughly 10-12 cm long and 6-7 cm wide, about 1.5 cm thick. Aim for a shape that resembles a boneless 'rib' cut; they should feel firm but still pliable.

Sauté Aromatics: Heat the olive oil in a large frying pan or skillet over medium heat. Add the finely diced white onion and cook for 3-4 minutes until it softens and turns translucent, releasing a sweet, mellow aroma. Stir in the minced garlic and cook for another minute until fragrant; be careful not to let it brown too much.

Cook the Patties: Gently place the formed beef patties into the hot pan, ensuring not to overcrowd it (cook in batches if necessary). Cook for 4-5 minutes on each side until they are beautifully browned and caramelised on the exterior, and cooked through to an internal temperature of 70°C. You'll hear a satisfying sizzle, and the patties will develop a deep, savoury smell. The edges will look crisp, and the centre will be firm to the touch.

Coat and Toast: Once the patties are cooked, spoon a generous amount of the prepared BBQ sauce over each one, ensuring they are fully coated and glistening. Let them simmer in the sauce for another 2-3 minutes, allowing the flavours to meld and the sauce to warm through. While the patties are simmering, lightly toast your sandwich buns in a dry pan or under a grill until they are golden brown and slightly crisp, emitting a lovely toasted bread smell.

Assemble the Sandwiches: To assemble, place a sauced patty onto the bottom half of each toasted bun. Top generously with dill pickle slices and thinly sliced red onion. Place the top half of the bun over the toppings. Serve immediately while everything is warm and the sauce is still wonderfully sticky.