 In 1958, the company introduced flavored potato chips, and in 1974, switched to foil packaging from the traditional glassine bags.The 1970s and 1980s saw a growth in the snack food industry which prompted an expansion in the variety of products being manufactured, including corn chips, tortilla chips, and pretzels.The 1980s also saw the addition of the Herr Angus Farm, a cattle farm which made use of potato waste products.