The folks at Thomas Creek Brewery and Birds Fly South Ale Project, both of Greenville, S.C. teamed up this past summer to release a collaboration effort called American Sour Blackberry Ale. The American Sour Series is “aged and soured on four different fruits for up to one year” according to a label submitted to the Alcohol and Tobacco Tax and Trade Bureau (TTB).

The four beers in the series are all 6.8 percent ABV and offered in 750ml bottles . The four varietals are:

  • Tart Cherry Ale
  • Black Currants Ale
  • Raspberry Ale
  • Blackberry Ale

On Feb. 27, Thomas Creek posted a video of American Sour Blackberry Ale being bottled for an April 1 release on Twitter.

Emails sent to Thomas Creek and Birds Fly South seeking additional information were not immediately returned.