For the ketchup
Blend everything together with a whisk. (Holds for 1 month).
For the 1-2-3 Sauce
Blend together with a whisk (Holds for 1 week).
For the onion rings
Whisk the yeast into the beer then incorporate the flour a bit at a time until it’s as thick as yoghurt. Leave in a warm place to prove for half an hour. Dredge the onion rings into the flour then dip into the batter. Fry at 180 degrees Celsius for 1 minute on each side or until golden brown.
For the burger patties
Mix the mince to ensure the fat is evenly distributed. Form into 8 burger patties. Fry until medium-rare (+- 3 minutes on each side).
Toast the buns. Spread the 1-2-3 sauce on the bottom bun then cover with onions. Place the patty on the onions and top with cheese. Place grilled bacon on the cheese then top with lettuce, sliced tomato and pickles. Add ketchup and top with the top bun.
Serve immediately, with the onion rings.