If you’re grinding your own meat, add the cubed sirloin and chuck to a bowl and combine it. With the largest meat grinder attachment on your mixer or grinder, turn the speed to #4 and add the meat. Repeat until you’ve worked your way through all of the meat. Change the grinder attachment to the smaller attachment. Pass the meat through the grinder once more. Divide the meat into 4 ounce mounds. You should end up with 8 mounds of meat.
If you’re using store-bought ground beef, no biggie. Divide the meat into 4 ounce mounds.
Form pucks that are about 2 inches tall and 2-inches wide. Sprinkle the tops with a few pinches of salt and pepper.