Colcannon - mashed potatoes with shredded kale or collards. You can also use shredded cabbage and green onions. The important thing is to make it GREEN!Just take your favorite mashed potato recipe, throw in some micro-sliced kale, cabbage and green onions to boil with the potatoes and "spuds o blarney" you've got dinner! This is an inexpensive dish that's great for feeding a lot of people ...in a hurry ...on the cheap. What's more, according to the "Food Lover's Guide" Colcannon is actually more traditional an Irish meal than Corned beef and cabbage, hey.