Chuck pot roast is perfect for smash burgers. Meats with a higher fat content will produce a better smash burger. The fat melts as it cooks and adds to the juiciness, taste, and texture of the burger. To make this exact recipe, you need to purchase the beef and grind it yourself. If you don't have a meat grinder, but want to try this recipe, you can purchase ground beef at the grocery store. A 70/30 or 80/20 blend will work better than a 93/7 or a similarly lean meat.