sentence: boil potatoes in water with salt sentence: peel the stems off the kale sentence: slice the leeks sentence: chop the green onions and add them to a blender sentence: add the vegetables to boiling water sentence: add the vegetables and butter to the blender and pulse sentence: mash the potatoes with butter sentence: mash the potatoes with the pureed vegetables sentence: add salt and pepper to the mashed potatoes sentence: mix cream into the potatoes