HAGGIS: a national Scotch dish which consists of a well cleaned sheep stomach filled with the minced, blanched and cooked sheep's heart, liver, lungs, etc., mixed with oatmeal, onions, beef suet, herbs, etc., cooked from two to three hours before serving. Haggis is now sold in can form, for this purpose being cooked first in well buttered molds instead of in the stomach.