Add Hole To Hamburger Patties

My son showed me how to keep my ground beef patties from swelling up like pillows. I am really old and didn't know this. I hope I am not the only one. When he cooks hamburgers he puts a thumb hole in the patty and it won't swell up. You don't have to keep smushing it down when it puffs up and this preserves the nice juices and you won't have dry burgers. It closes as it cooks so your burgers don't look like donuts when they are done.