Irish soda bread is a bread made with baking soda as a leavening agent instead of yeast.
Traditional soda bread is made with flour, baking soda, salt, and buttermilk. Through the years (and quite controversially to soda bread purists) the addition of eggs, nuts, or dried fruits has become common.
I respect the history of the dish, I recognize it is from a simpler time, but I'm going to make it with additional ingredients.