By Jackson Dodd

The Iowa Alcoholic Beverages Division released an advisory for Moscow Mule drinkers.

The popular adult beverage is a mix of vodka, ginger beer, and lime juice and is often served in copper mugs, which therein lies the problem.

Related: Harmful Chemicals Found In Most Mac And Cheese Products, Study Finds

“Iowa, as well as many other states, has adopted the federal Food and Drug Administration’s Model Food Code, which prohibits copper from coming into direct contact with foods that have a pH below 6.0,” the report reads. “Examples of foods with a pH below 6.0 include vinegar, fruit juice, or wine.”

The agency reports that the pH of a traditional Moscow Mule falls below 6.0, which puts the beverage in the danger zone if the copper mug has a copper interior.

The report also indicates that copper mugs that are lined with other metals, such as nickel or stainless steel, are not at risk.


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