https://www.youtube.com/watch?v=f0JoW1ME4vw Serves: 10 | Serving size: ½ cup  Ingredients 2.5 lbs gold, red, or white potatoes 4 tablespoons unsalted butter, softened ½ cup plain low-fat yogurt 2 tablespoons 1% milk, or more to adjust for desired texture *Optional: 1 tablespoon salt, used in boiling water *Optional: Fresh herbs or spices like garlic powder and rosemary