A sheep's pluck is the internal organs of a sheep, specifically the liver, lungs and heart. Chefs and home cooks dice these organs and stuff them into a sheep's stomach to prepare the traditional Scottish dish called haggis.
Haggis is the traditional pudding served on Burns Night to celebrate Scotland's poet, Robert Burns. The feast takes place January 25th of each year, but those living in the United States will have trouble locating all of the ingredients required for a sheep's pluck.
Tongue is sometimes substituted for the lungs, and a sausage casing often replaces the sheep's stomach lining. Mixed with oatmeal, onion, suet and seasonings, the sheep's pluck resembles a soft, meaty pudding. Accompaniments include mashed turnips and potatoes.