Corned Beef, Sauerkraut, and Rye Bread Is it the corned beef, rye bread, or sauerkraut that makes a Reuben sandwich Irish? If you research the history of the Reuben sandwich, you’ll learn that it originated in New York City when it was invented by German immigrant Arnold Reuben. Neither corned beef or sauerkraut (fermented cabbage) is a popular food in Ireland. You can, however, find organic rye bread there. Irish immigrants to America substituted corned beef for pork because it was less expensive. So if you’re planning a trip to Ireland and hope to enjoy the best Irish Reuben sandwiches everywhere, you should probably countRead More →