75% lean. 25% fat. The prime burger. This fresh USDA prime chuck burger packs the most flavor into every bite. Est 1978. The very best burger. In the late 1800's, Harry Schweid was a beloved butcher that sold high quality meats to local restaurants in New York City's lower east side. By the 1950's. His son Sam had his own business in Harlem selling the best meat around. In 1978, Sam's son David took his family's long withstanding heritage in the meat purveyor industry and founded Schweid & Sons, a company that would focus on one product - ground beef. Today, that same passion, commitment and work ethic is carried on-here at Schweid & Sons through David’s two sons, Jamie and Brad, all with a dedication to producing the best tasting, highest quality burger. As Sam always said, if you put only good meat into your burgers, only good things will come out. The Prime Burger: Only 3% of all the beef in America lives up to the strict specifications that qualify it as USDA prime. Abundant marbling creates a juicy burger rich with flavor. Made from premium cuts of boneless USDA prime chuck.