In a large bowl, combine the minced beef, egg, breadcrumbs, Worcestershire sauce, ketchup, salt, and black pepper. Let the mix rest in the fridge for 1 hour; this helps them bind together.

Mix gently with your hands until well combined. Divide the mixture into 4 equal portions - I weigh the mix on my scales and divide by 4 (or 8 for mini) and shape into patties slightly larger than your burger buns, I use a large or small cookie cutter to get the nice round shape.

Mix all the burger sauce ingredients together.

Heat a drizzle of oil in a heavy-based frying pan over medium–high heat. Add the patties and cook for 10–12 minutes, turning once halfway through, until browned and cooked to your liking. In the final minute of cooking, place a slice of cheese on each patty and allow it to melt.

Preheat your bbq, make sure it's really hot, over 200ºc, add the beef patties and sear for 10 minutes, turn and repeat for a further 5-10 minutes, until cooked through.