Mashed potatoes are one of those seemingly simple dishes that can go wrong in a myriad of ways. Without proper care, they can turn glumpy, lumpy, gluey, and bland. There are, however, steps you can take and pitfalls you can avoid to ensure your mashers come out smooth, velvety, and delightfully fluffy.
Source: LifeHacker – How to Making Smashing Mashed Potatoes