MillerCoors introduced a new standard can top for its 12- and 16-ounce size Miller Lite and Miller Genuine Draft cans. The Punch Top Can increases airflow, reducing glug and resulting in an improved, smoother pour that highlights the taste of the beer, the company says. According to company research, consumers prefer the Punch Top Can three-to-one because it more closely mimics the taste of beer served in a pilsner glass.