Once merry-making New Year's bells stop ringing and Times Square clears out, people of Scottish descent make plans to celebrate the Jan. 25th birthday of their esteemed poet Robert Burns at formal dinners with a carefully prescribed format. The evening calls for good Scotch whiskey, poetry readings and a detailed menu to include something called haggis, among other things. By definition, haggis is "a mixture of the minced heart, lungs and liver of a sheep or a calf mixed in with suet, onions, oatmeal and seasonings, and boiled in the stomach of the animal."