By Sarah Gabriel
From America’s Test Kitchen
Colcannon is a simple, beloved Irish preparation of mashed potatoes studded with greens and alliums and topped generously with butter. In our take, we opted to punctuate the mash with earthy leaves of kale and mild, sweet scallions. We used Yukon Gold potatoes to yield a creamy mash. We chopped the inclusions small and then sautéed them in butter to ensure that they'd fold effortlessly into the potatoes.
