No. 1 in Chicago. JemmBurger is the burger lovers' choice! JemmBurger is Chicagoland's best selling (according to the latest AC Nielsen supermarket scan data) brand. That's because since 1959, our name has been synonymous with great burgers! The reason is simple: burger lovers flip for our exceptional flavor! We use only the best ingredients, and our rigorous quality control standards are the highest in the industry. Got a taste for a great burger? Bite into a JemmBurger! We've combined the juicy, delicious taste of the best homemade burger with the speed and convenience of cooking direct from your freezer! Look for all our other quality JemmBurger products in your grocer's freezer. Great taste runs in our family! jmmburger.com. US inspected and passed by Department of Agriculture. Proudly made in Chicago.