1) Preheat a griddle over medium-high heat.
2) Place the meat in a bowl and add the cheese. Peel the onion and halve it, if using the medium onion. Grate about 3 to 4 tablespoons of onion into the bowl, directly over the meat. Finely chop the remaining onion and reserve for the topping. Add the spices to the meat: paprika, cumin and about 1 tablespoon of griddle seasoning and/or some salt and pepper. Add the garlic, parsley, Worcestershire sauce and beer then form the meat into four large patties, making them a little thinner at the centre than at the edges. Burgers plump when you cook them so this will prevent burger bulge.
3) Drizzle a little olive oil over the burgers then griddle for about 4 minutes on each side for medium rare, 5 minutes on each side for medium and 6 to 7 minutes on each side for well done.
4) Mix the mustard and sour cream with the dill.
Serve the patties on the bap bottoms and top with lettuce, pickles and chopped raw onion. Slather the bap tops with sauce and serve.