Moscow Mules are one of our favorite summer drinks. And we’re not alone—it’s one of the most visited recipes Liquor.com. They’ve become so popular in recent years, someone even made a $185 one this summer.
But new research says that the copper cup that is so integral to the perfection of our favorite beverage could be hurting you. The Iowa Alcoholic Beverages Division just issued an advisory warning that said those trendy copper mugs could be bad for your health.
This isn’t exactly new, as The Food and Drug Administration’s Model Food Code “prohibits copper from coming into direct contact with foods that have a pH below 6.0.” Since a traditional Moscow Mule includes vodka, ginger beer and lime juice, it certainly fails miserably.
But don’t freak out yet, your mugs could be fine. You just need to check them. The Iowa Alcoholic Beverages Division clarified that mugs that are lined on the interior with another metal, such as stainless steel or nickel, are fine to use.
Can’t get enough Moscow Mules, mug or no mug? Check out these twists: