An Irish bread that is made of a white flour dough, enriched with eggs and butter, and flavored with currants, raisins, sugar, and citrus zest. Barm Brack is a yeast leavened bread, which is unusual because many Irish breads are leavened with baking soda and are classified as quick breads. Barm Brack is similar to the Welsh bread known as bara brith and is most often served for afternoon tea or as a breakfast item.