any burger should be 25-30% fat, cooked on a hot hot grill for 2 minutes each side to chat and that’s it. No smashing and let it sit for 5 minutes and if well seasoned then you just need a bun. When you bite it should be pink in the middle. Another other way is a bastardize version and an abomination. (This was in response to the primer how do you like your cheeseburger.)