Sorbic acid, a preservative, will be removed from the brand's American and White American varieties, and the mold inhibitor natamycin and another proprietary ingredient for food safety will be added, Kraft said Monday.
Natamycin is an anti-fungal appropriate for cheese, the U.S. Food and Drug Administration said.
The move comes two years after Kraft began advertising its Kraft Singles have "no artificial flavors," the Chicago Tribune noted.
The product will be promoted as "Kraft Singles with No Added preservatives," the company said in a statement Monday, adding winter is the most popular time of the year for grilled cheese sandwiches.
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