Mash the potatoes with 1 1/4 cups of the broth, 2 or 3 cloves of roasted garlic* and chives, if desired. Add additional broth, if needed, until desired consistency is reached.
(It looks kind of like a big garlic press.) Using it is simple ... A classic pitfall in the quest for smooth mashed potatoes is overworking them, which is easy to do when you vigorously smash ...