Soda and Wheaten Breads are popular in all parts of Ireland.
Traditional Soda is usually dome shaped and cut with a cross on top. Soda farls are more popular in Northern Ireland and are shaped like Potato farls (slices), but thicker.
Wheaten is usually loaf shaped and should be moist. It is often eaten with jams or preserves and is great toasted.

Neither contains yeast.