In honor of the darkest day of the year — Dec. 21 — Dunkin' Donuts, Canton, Mass., and Wormtown Brewery, Worcester, Mass., announced a partnership to launch DDark Roasted Brew, the first beer to be brewed with Dunkin' Donuts Dark Roast coffee beans. This decadent, stout-style beer features full-roasted coffee flavor reminiscent of freshly ground beans with a creamy mouthfeel, the companies say.

DDark Roasted Brew will be exclusively available for purchase on draft at Wormtown Brewery's Tap Room in Worcester beginning at the winter solstice, 11:28 a.m. on Dec. 21, 2017.

"We're thrilled to partner with Wormtown to launch DDark Roasted Brew," said Rob Branca, a local Dunkin' Donuts franchise owner in Worcester, Mass., in a statement. "Worcester is home to one of the first Dunkin' Donuts restaurants, so we know how much residents love the brand and our coffee. This partnership with Wormtown continues to drive innovation in Worcester, and we are excited to brew up something extra bold to help our loyal guests to celebrate the darkest day of the year."

To celebrate this special release, Wormtown Brewery and Branca will join forces to donate $11,500 to the Worcester Food Bank to help the local community make the most out of the holiday season, they say.

"We couldn't be more excited to partner with Dunkin' Donuts on our latest beer," said Scott Drake, head brewer at Wormtown Brewery. "We're confident this beer is going to be an instant favorite for New Englanders this holiday season, and the fact that we're able to give back to Worcester-area families through this partnership just makes it that much better."

Dunkin' Donuts and Wormtown fans are invited to attend a ceremonial keg tapping event during the winter solstice at 11:28 a.m. on Dec. 21, 2017, at Wormtown Brewery's Tap Room, located at 72 Shrewsbury St. Guests will have the chance to enjoy doughnut and beer pairings created by the Dunkin' Donuts Culinary Team, like the Double Chocolate Cake Donut with DDark Roasted Brew, where the smooth body of the beer complements the creaminess of the chocolate icing, finishing with notes of Dark Roast Coffee, malt and chocolate cake, the companies say. Also, the first 100 guests will receive a gift bag to help celebrate the official start of the winter season, they add.