So, two, making the indentation in the patties helps keep your reflexes in check and ensures juicy, moist burgers. As the meat cooks and expands, the depression magically disappears, leaving you with beautifully shaped and cooked burgers..aking a serious indent in uniform-shaped, 3/4-inch-or-less thick patties does two things, Flay says: One it prevents flying saucer-shaped burgers – you know the ones I am talking about: all puffed up and bulging in the center.