Tom, what you call Colcannon, I call Bubble and Squeek. I always make mine from leftovers, but I make sure I make enough mashed potatoes and cabbage the first time round so that I can have Bubble & Squeek the next day.
Has anyone ever read "The Wind in the Willows" where poor Mr. Toad is in jail and the jailer’s daughter brings him B&S to comfort him?
Whatever you call it, it’s only one of the best dishes known to mankind! (And I am NOT exaggerating.) YUM!