The BEST Colcannon recipe ever, this version adds caramelized cabbage and onion to potatoes for a rich, buttery flavor. So easy and bursting with flavor. Colcannon Potatoes, Colcannon Recipe, Mashed Potatoes, Broccoli Slaw Dressing, Clam Sauce Recipe, Main Dishes, Side Dishes, Irish Recipes Authentic, White Clam Sauce