Heavy weight to help smash the patty down to a 6” flat patty shape. The 1 cm raised edge locks in the juices and fats in while pressing down on the patty Do it like the pros! Place a piece of parchment paper over the loosely packed ball of meat before smashing down! Provides an easy and clean transition between pressing each burger down. For the Best tasting smashed burgers, experts say to buy 80% ground beef. That means there is 20% fat in the ground meat, which is extra flavor for the smashed burgers! Crispy, cracked edges and a juicy center is what you can expect when you make smashed burgers with this Cast Iron burger press. The crispy and a juicy center is what you can expect when you make smashed burgers with this cast iron burger press. This is made of cast iron.