In 1948 they closed their restaurant for renovations and when they reopened they removed the drive-up service and were a drive-thru restaurant with a limited menu. The McDonald brothers called their new system the "Quick Service System" where they quickly offered hamburgers, fries and shakes. The burgers were prepared factory style, where all burgers were the same and had ketchup, mustard, onions and pickles on each burger and were kept hot and were readily available when a customer came by through the drive-thru (the story of McDonald's,