Price: $2.89 in most locations, the same as a large shake.
Success: A key part of McDonald's seasonal strategy, it remains less well known than its cousin the McRib.
Price:Varies by location; the same price as other bagels.
Success:Rival Einstein Bros. trademarked a green bagel in 1998, but Bruegger's still sells its own version.
Price: $6, the same as a Long Island Iced Tea.
Success: The seasonal cocktail helps TGI Fridays further capitalize on its preexisting popularity as a St. Paddy's Day spot.
Mint Oreo doughnuts
Price: 99¢ in most locations, the same as a regular doughnut.
Success: Its fate is uncertain as DD moves into West Coast markets and has to adjust for regional tastes.
A version of this article appeared in the March 2014 issue of Fast Company magazine.