Copper mugs and cocktails may not be a healthy mix

Copper mugs and cocktails may not be a healthy mix

The simple cocktail requires only vodka, lime juice and ginger beer along with garnish which can either be a lime slice or mint leaves.

"High concentrations of copper are poisonous and have caused food borne illness", the bulletin said. The spate of headlines was kicked off by an official state health advisory warning that the drink, usually served in a copper mug, poses a health risk if the wrong kind of mug is used.

Iowa's health advisory warns that a Moscow Mule drink served in a copper mug could turn acidic enough for it to become a hazard to the person who consumes the drink.

Food experts have long known not to use copper, or copper-related pots and pans for cooking acidic recipes such as tomato sauce.

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Other examples of beverages with a pH below 6.0 include fruit juice and wine. Iowa follows the Food and Drug Administration's code that prohibits copper from coming into direct contact with acidic foods with a pH below 6.0, including Moscow Mules.

"This means that copper mugs that have a copper interior may not be used with this beverage", according to the ABD.

According to the National Institutes of Health, symptoms of copper poisoning include abdominal pain, diarrhea, vomiting, and jaundice.

If the copper mug isn't lined with another metal, like nickel or stainless steel, that could be a big problem. If you search for mule mugs on Amazon, numerous top sellers are unlined pure copper.

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