Mash potatoes with a hand masher, or if using an electric mixer, mix on low speed. Mixing on high speed can make the texture pasty.
To avoid last-minute preparation, the mashed potatoes can be made up to 4 hours ahead and kept warm in a slow cooker set on Low. Spray the inside of the cooker
with cooking spray before adding the potatoes.
Russet potatoes are low in moisture and high in starch, making them good for baking and mashing.