Starbucks issued an apology after a barista served a Louisiana schoolteacher a pair of lattes with a pentagram and the numbers 666 scrawled in caramel drizzle on the foam.
"Unfortunately I can't give the young mans (sic) name who served it because I was so appalled that I could not bring myself to look at him," Megan K. Pinion wrote on Facebook.
Pinion said the pentagram was "almost okay" because it resembles the Starbucks logo, but the 666 is "quite offensive."
Starbucks spokesman Tim Kuhn apologized for what the Daily Advertiser newspaper has dubbed "the brewhaha."
"We reached out to her through social media and apologized. We're taking the complaint seriously. We're not sure who served her or what kind of beverage it was. It looks kind of caramel-ish in the photos," he told the Advertiser.
"This obviously is not the type of experience we want to provide any of our customers, and is not representative of the customer service our partners provide to millions of customers every day."