Who doesn't loved mashed potatoes? Here's how to enjoy them with less guilt. In a large stockpot, cover 3 pounds of peeled, cubed russet potatoes with water. Bring to a boil, reduce heat and simmer until tender, about 15 minutes. Drain potatoes and return to pot. Peel 6 garlic cloves and place in a small saucepan. Cover cloves with water. Bring to a boil, reduce heat and simmer until tender, about 10 minutes. Remove the cloves. In a food processor or blender, puree garlic with 1/2 cup fat-free milk. Mash together potatoes, puree and 1 tablespoon margarine. Season with black pepper and garnish with fresh parsley.