Peel and cut up a russet or Yukon Gold potato(es). Place in a pan and cover with cold water. Add a healthy amount of salt to the water. Bring the water to a boil and continue to boil gently until the potatoes are cooked through. If you stick a knife into the potato, it should go in easliy and come out without a fuss.
Drain the potatoes and mash them using a ricer (my first choice) or potato masher. Add butter, salt, pepper and cream and mix gently with a spoon or fork.
You can dress up the mashed potatoes by adding sour cream in place of the cream, garlic powder or roasted garlic cloves, chives, grated parmesan cheese. Let you imagination go wild.
"If you want to make an apple pie from scratch, you must first create the universe." -Carl Sagan