The Original Donut Shop and Kelsea Ballerini announce co-branded Ballerini Blend

The Ballerini Blend — a co-branded limited edition flavor from The Original Donut Shop Coffee and country superstar Kelsea Ballerini — debuted on National Donut Day to wide demand. Already sold out on Keurig.com, the playful blend will remain an elusive dream for some coffee lovers.

"Coffee is such a constant in my life, so it is really special to release this blend with The Original Donut Shop," said Ballerini in a release when the flavor debuted on June 7. "The Ballerini Blend is my craveable comfort, my morning must-have, and a mug full of vanilla-flavored goodness. It's my taste of home when I'm on the road, and my absolute favorite way to treat myself."

The coffee pairing is the latest in a series of collaborations between Ballerini and the brand. Earlier, the brand launched its Brew Some Ooh campaign starring Ballerini. The brand and Ballerini planned to co-host a brunch event in Nashville on June 7 to give fans a taste of the brew and a chance to enjoy a live performance from the singer.