Colcannon with Leeks and Kale
4 large russet potatoes, peeled and chopped into chunks8 ounces red potatoes, peeled and chopped into chunks10 ounces parsnips, peeled and sliced2 bay leaves5 tablespoons butter1 leek, cleaned and chopped4 ounces kale, chopped1 - 1 1/2 cup whole milk1 teaspoon...