Irish Colcannon

1.5 pounds potatoes, peeled and chopped
1 bunch kale, midribs removed
1 bunch leeks, cleaned and sliced (or substitute onions)
½-1 cup cream
Salt and pepper

Boil potatoes until tender.  Steam kale until very tender.  Drain well. Cook leeks in cream until tender, about 5-10 minutes.  Mash potatoes with leeks, cream, and then beat in kale until pale green and fluffy.  Add butter, salt and pepper to taste.  Serve piping hot!