New Delhi, March 7 -- A popular snack sold across parts of the United States has been recalled after it was found to contain an undeclared allergen that could pose a serious risk to some consumers.

Food manufacturer Frito-Lay has issued a voluntary recall of certain 8-ounce bags of Miss Vickie's Spicy Dill Pickle potato chips after discovering that the packets may contain milk that was not listed on the label. The recall was announced earlier this week and shared publicly by the US Food and Drug Administration.

According to the company, some bags of the pickle-flavoured chips may actually contain jalapeño-flavoured potato chips, which include milk as an ingredient. Because the milk was not declared on the packaging, people who have...