Beginning Monday, March 4, Dunkin’ is giving customers an extra special treat for March in honor of St. Patrick’s Day. The chain has announced that Irish Crème-flavored coffees and espresso drinks have returned to the menu for the first time in half a decade.

The Irish Crème flavor will be available in Dunkin’s hot and iced coffees, frozen coffees, lattes, cappuccinos, Americanos, macchiatos, and more. Joining the Irish Crème flavor for St. Patrick’s Day is the Mint Brownie Donut. The limited-time square-shaped donut features mint brownie batter filling, light green colored icing, and crumbled brownie topping.

“March can be a long, cold month, but St. Patrick’s Day and the end of Mardi Gras bring opportunities for pure joy. Dunkin’ is the brand fueling that feeling of fun and optimism when people need it most, and what better way to give our guests an extra boost than by bringing back a beloved flavor of the season,” says Tony Weisman, Chief Marketing Officer, Dunkin’ U.S. “With the return of Irish Creme and the addition of our Mint Brownie Donut, we’re making the spirit of celebration last all month long.”

Dunkin’ will look to bring select customers a little extra luck in the spirit of St. Patrick’s Day. On Wednesday, March 6, seven Dunkin’ restaurants across the country will be rebranded as “O’Dunkin’,” complete with new exterior signage and festive décor inside. At each of these locations, the first 250 guests will be offered a free small Hot or Iced Irish Crème-flavored coffee or latte. Dunkin’s Instagram will provide clues on where the O’Dunkin’ restaurants will be located.

Dunkin’ will continue to treat guests throughout the month of March, as participating Dunkin’ restaurants will serve medium-sized iced coffees for $2 between the hours of 2 p.m. and 6 p.m. each day.