What ---to you--- is the perfect hamburger?
Chopped habaneros, black pepper. garlic and Montreal Steak Seasoning and some mustard (liquid not powder), and maybe some Tony Chachere's, added to the meat.
Lately I've been frying some sliced mushrooms with some butter in the microwave for several minutes and add them to the meat/spices mixture.
Very fresh hamburger so I can leave it somewhat undercooked.
Chopped Onions. Lettuce, Mustard, Ketchup on a toasted bun.