Fill a large deep pot with cold water and salt it heavily
set it over low heat
wash and peel potatoes, trim and clean as needed
wash again before cutting the pieces up, you don't want any dirt or grit in your cooking water
cut the potatoes into large pieces about 2 or 3 inch chunks
add the potatoes to the water and turn the heat up to medium-high heat
cook the potatoes for 15-20 minutes or until they are knife tender
drain the potatoes well don't leave too much water in them
add them back to the pan or a mixing bowl if that works better for your mixer
cut the butter in chunks and add them to the hot potatoes
use a potato masher to completely mash the potatoes until they're as smooth as possible
then add the cream
use the mixer and beat the potatoes with an electric mixer until creamy and whipped
taste for salt and add as needed, stir and taste again, if you want to add black pepper you can, I prefer not to but that is a choice you can make for yourself
whip again to mix the salt and if added pepper so it's completely mixed in
at this point the potatoes are ready to serve
or they can be stored for up to three days and reheated in a covered baking dish OR heated in a slow cooker until you're ready to serve them