CARPINTERIA Calif. The Carl’s Jr. and Hardee’s quick-service chains have delayed their switch to trans-fat-free cooking oil by almost a year because of “operational issues,” parent company CKE Restaurants Inc. said late Wednesday. CKE's previously announced plan called for a switch throughout both systems to a canola cooking oil by January. However, company officials said Wednesday that unspecified "issues" in the latter stages of testing have pushed the rollouts back to the end of ...
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