Place potatoes in a medium pot and cover with cold water. Bring to a boil, heat to a simmer.
Add a generous pinch of salt and continue to simmer until potatoes are fork tender, about 20 minutes.
Heat cream, salt and pepper and butter in a medium saucepan over medium heat until steaming hot, about 6 minutes.When potatoes are done, drain and return potatoes to pot to dry slightly. Optional: Run potatoes through food mill or potato ricer into pot.
Add potatoes to the cream and butter mixture. Stir in parmesan cheese, taste for seasoning.
