Chicory was one of the first beers Dogfish Head started brewing at their pub back when it opened in 1995. It's a dark brew made with a bunch of roasted chicory, organic Mexican coffee, St. John's Wort and licorice root. They use whole-leaf Cascade and Fuggle hops, as well as pale, roasted and oatmeal grains.
Back in 1995, they had a teeny, tiny brewing system and had to brew all day, every day to keep the bar stocked. Brewing with the same four ingredients got really boring really quickly. That's when Sam's ADD kicked in and he started adding some nontraditional ingredeints.
Chicory Stout is a winter seasonal and released in bottles each year in November and December.