Use ground chuck, 15-20% fat.
Make half pound patties. You can divide them later if necessary.
Sprinkle the patties on both sides with Ac'cent and freshly ground pepper.
Pan fry on medium heat. Do not add oil.
Just before turning sprinkle the top side only with kosher salt.
When just about ready put freshly shredded very sharp cheddar on top and cover for about one minute.
Serve on the bread or bun of your choice, or, for something far better, serve sourdough on the side with plenty of butter and interesting tapenades, etc. If you wish to to be traditional you may fill the plate with pickles, olives, sweet peppers, French fries, etc.
This is excellent. Ac'cent is the secret of chefs the world over. Once on every grocer's shelf it's now hard to find; but I bet you can guess who carries it.
Ac'cent Flavor Enhancer - 2 lb. canister: Amazon.com: Grocery & Gourmet Food
Folks, this will be the best hamburger you've ever eaten.
I've prepared this for at least twenty people and they've all told me that.
If I could raise Julia Child from the dead I'd serve it to her with no reservations.