This traditional soup used to be made with leak and oatmeal and has been served in Ireland for generations. Most cooks now prefer to combine leeks with potatoes, however, to make this perennial favorite. This recipe is also called Brotchan Roy meaning "A broth fit for a king". The word "roy" is derived from Ri - the Irish word for King. Savory hot biscuits are a fine accompaniment for soup. Add the herb seasoning of your choice to your biscuit mix before adding the liquid.