I suppose first off is having really good ground beef. I get mine from a local rancher, Kenny Barham from www.barhamcattleco.com
But the next thing is the trick of using a panade. The French, they are super smart when it comes to food. And they make this thing called a panade, which is mashing bread in milk, and then it is mixed with meat, and it makes the meat always, always, always moist. There are scientific reasons for this, and you can find those reasons here:
http://www.jessicagavin.com/panade-the-secret-to-keeping-ground-meat-tender/
First I trim the crusts off the bread and cut it in cubes. Yes, that is a slice of Wonder bread. Steve likes it. Don't judge. I do keep some bread in the freezer just for this. We don't always have fresh bread on hand. I didn't take a pic of sprinkle the milk over the bread cubes, but basically you sprinkle two tablespoons of milk (or in my case half and half which I always have on hand). Let it sit for awhile to soak the bread, the mash into a paste.
Add two teaspoons a1 sauce, 1 clove of minced garlic (be generous here), 3/4 teaspoon salt, and 1/2 teaspoon black pepper.
Mix it all thoroughly together.
And crumble 1 pound good quality ground beef and again mix it thoroughly - it's best to use your hands.
Form four patties out of 1 pound ground beef, and create a depression in the middle.
For best flavor, use a charcoal gril, second best use a gas grill, and finally, you can cook on the stovetop if absolutely necessary. The burger below was grilled four minutes each side on a charcoal grill (I'm a Weber fan). These burgers are so good I barely put anything on them.
Best Hamburgers Ever
1 pound ground beef
1 slice white bread, trimmed and cubed
2 Tablespoons milk (or half and half or cream, whatever you have)
2 Teaspoons A1 Steak Sauce
3/4 Teaspoon salt
1/2 Teaspoon black pepper
1 clove minced garlic
Sprinkle milk over the cubed bread and let it sit while you measure out the remaining seasoning and mince the garlic. Mash the bread cubes and make sure everything is thoroughly moistened. Add the remaining seasoning and garlic, and mix thoroughly. Add the ground beef and mix thoroughly.
Form four patties and create a depression in the center. Grill four minutes on each side.