Peel and cut the potatoes into cubes. Boil them in salted water for approximately 15 minutes or fork tender. Once potatoes have cooked, drain the water.
In a large bowl add the garlic, sour cream, butter, and Parmesan to the potatoes, and mash until desired consistency. Add salt and pepper to taste.
To serve, add as a side to any dish.
Recipe courtesy of Petty Officer Todd, U.S. Navy