Roasted Garlic Mashed Potatoes with water

1 bulb of elephant garlic, or 2 large bulbs of American garlic, unpeeled olive oil fine sea salt and fresh ground black pepper 6 potatoes , peeled and cut in[...]

3 heads garlic , split in half 3 tablespoons olive oil 2 lbs potatoes , peeled and diced 1/2 cup butter , cubed 1/2-3/4 cup heavy cream salt and white pepper[...]