Most authentic Irish soda breads are whole wheat but combinations of half white and half whole wheat or white whole-wheat make for a fine standing loaf. As with anything else, a larger proportion of white flour will give an airier and higher loaf. All wholewheat will give you a more rustic, nutty loaf. Both eggs and caraway seeds are optional. I alternate on including the caraway seeds but often omit the eggs. You will use more of the buttermilk if you omit the eggs. I like this with a wedge of sharp cheddar or imported Cheshire or Lancastershire cheese - and a couple of pickled onions for a makeshift ploughman's platter. I made miniatures of this recipe for my sister-in-law Sheila Moore's shower a few years ago. Each guest got their own brown-paper and cord, and green ribboned package of still-warm soda bread.....and the marriage that followed is going strong. Is it the special union or the soda bread? Baking is....magic.