1. In a large saucepan, combine the potatoes, water, broth and garlic. Bring to a boil. Reduce heat; cover and simmer for 12-15 minutes or until potatoes are tender.
2. Meanwhile, in a small saucepan, heat buttermilk until warm. Drain potatoes and garlic; mash with buttermilk. Stir in the onions, salt and pepper. Yield: 6 servings.