I appreciate everyone’s interest and hard work in trying to find the recipe for Killarney Sauce. I’ve already gotten more response than I was expecting. Unfortunately, it appears to be one of those recipes, like Auntdot’s Marie Sauce, that’s too simple to be worth writing down. I think that I’m just going to have to swallow my pride and ask next time I’m at the restaurant. I always feel a little self conscious doing such things, but waiters are always looking for ways to get a better tip. If any of you are ever in the Phoenix, AZ area, be sure to go to Rula Bula located in downtown Tempe, and order Chips and Killarney Sauce followed by Sheppard’s Pie. They have the best Sheppard’s Pie that I’ve ever tasted. If I find out the recipe, I will be sure to post it. Thanks again for all of the help so far.