In this video, you’ll see how to make traditional Irish colcannon. A staple of St. Patrick’s Day celebrations, colcannon is a comforting combination of potatoes, bacon, cabbage, and onions that is always hearty and delicious, perfect any time the weather turns chilly. Watch the video, then get Diane's 5-star recipe for Diane's Colcannon. It’s a filling side dish with roasts. _[See more St.