Next month, Founders Brewing Co. is adding a stout to its newest series for the first time.

Mothership Series #3: MF Donkey Stout—which stands for Mackinaw Fudge Donkey Stout—is a 6.4 percent ABV stout brewed with Mackinac Fudge coffee sourced from Ferris Coffee & Nut in Michigan. The stout debuted as a draft-only option in 2014, but this will be the first time the beer has been packaged.

Mothership Series #3: MF Donkey Stout will be the third addition in Founders Mothership Series, which consists of releases that have been “brought out of retirement” or “experimental new styles” and will be available for carryout exclusively at the brewery’s taprooms in six-packs of 12-ounce bottles:

  • Mothership Series #1: Red Rye IPA (6.6 percent ABV) — February 2018 — IPA brewed with imported Belgian caramel malts and dry-hopped with Amarillo hops that was released in February
  • Mothership Series #2: Sleeper Cell (10.8 percent ABV) — April 2018 — Double IPA brewed with “an intense dose” of five different hop varieties
  • Mothership Series #3: MF Donkey Stout (6.4 percent ABV) — September 2018 — Stout brewed with Mackinac Fudge coffee sourced from Ferris Coffee & Nut

According to a post on Founders’ website, Mothership Series #3: MF Donkey Stout will be packaged in six-packs of 12-ounce bottles ($12) and is scheduled to be released exclusively at both of the brewery’s taprooms in Detroit and Grand Rapids, Michigan on Sept. 21.