In this video, learn how to make basic mashed potatoes. If you love good, old-fashioned mashed potatoes, this is the perfect recipe. Made with Idaho potatoes, milk, butter, and optional garlic, this go-to recipe for simple, homemade mashed potatoes is a classic holiday dish. Learn how to make mashed potatoes that come out smooth, creamy, and delicious every time. Serve with gravy or extra butter on top.