Mashed Potatoes with russet

3 lbs russet potatoes (about 6) 6 leeks , chopped, washed well, and drained (white and pale green parts only) 6 tablespoons unsalted butter 1 tablespoon fresh[...]

2 lbs russet potatoes , scrubbed and peeled salt 1 lb kale , about 1 large bunch, with the ribs removed and the leaves washed 1 1/4 cups low-fat milk 2[...]