If you do not have leftover colcannon you must first make the colcannon. Add a generous amount of butter to a frying pan. Add in chopped up green onions, about half a cup. Next add leftover cabbage and heat the two together. Mix together leftover mashed potatoes, green onions and cabbage until evenly mixed, keep off of heat. In a bowl add in ½ cup of flour and mashed potato mixture. Fold together. In a separate pan pour vegetable oil until it reaches about ½ inch thick around the pan. Once pan is hot, scoop out about 2/3 cup of colcannon, form into a patty and place on hot oil. Cook each side until golden brown, flipping once. Cool colcannon cakes on paper towels or brown paper. Drizzle Terrapin Ridge Farms Everything Aioli or Terrapin Ridge Farms Bacon Aioli on top of colcannon cake and enjoy!