According to Colorado Retail Food Establishment Rules & Regulations, vessels made of copper are prohibited from serving foods with a pH lower than 6. Such acidic ingredients—wine, fruit juice, and carbonated beverages included—may leach copper, possibly resulting in adverse health effects. (Copperiedus is the technical toxic term; cases are rare.) Unbeknownst to barflies everywhere, this sanction has been in place for years; whether barkeeps choose to obey it is another matter. We won’t say which watering hole sparked the sorrow in Aspen, but one thing is certain: word travels fast in this town.