Copper Mugs May Cause Illness, Health Officials Warn

Iowa health officials have warned that the copper mugs typically
used to serve Moscow Mule cocktails may cause copper poisoning.
The state’s Alcoholic Beverage Division warns that according to
U.S. Food and Drug Administration guidelines, copper should not
come into contact with acidic foods with a pH below 6, and a
traditional Moscow Mule is “well below” that, according to the
agency. When copper or copper alloys come into contact with
acidic foods, the metal can leach into the food; the agency
recommends using copper containers lined with a different
“nonreactive” material, such as nickel, stainless steel, enamel or
ceramic. See The Washington Post, August 8, 2017.

Issue 644