<P> Hardee's was purchased by Canadian company Imasco Limited in 1981 . In 1982, General Foods sold Burger Chef to Imasco for $44 million . Imasco converted many locations to Hardee's restaurants and let franchises and locations near existing Hardee's locations convert to other brands . Remaining restaurants that did not convert to Hardee's or new names and branding simply closed . </P> <P> A new management team, in the early 1980s, seeking to cut costs, changed the signature burger recipe and eliminated the flagship menu item, the Big Twin . The Big Deluxe continued to be offered throughout the 1990s . </P> <P> For a few years after acquiring the Roy Rogers Restaurants fast food chain in the early 1990s, Hardee's outlets sold the popular Roy Rogers Restaurant fried chicken recipe, hoping it could compete with Kentucky Fried Chicken . In addition to Roy Rogers, Hardee's also owned Rax Roast Beef for a period of time and sold roast beef sandwiches throughout the Hardee's system . </P> <P> In April 1997, CKE Restaurants Holdings, Inc., the parent company of Carl's Jr., bought Hardee's from Imasco for $327 million . The merger created a chain of 3,828 restaurants--3,152 Hardee's outlets in 40 states and 10 foreign countries and 676 Carl's Jr. outlets primarily in California . </P>

When did hardee's stop serving roast beef
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