Peel and cut the potatoes into roughly the same size, about 2 inches. Add the potatoes to a large pot and fill it with cold water. Add a tablespoon of salt.
Bring the pot to a boil over high heat, then reduce it to a simmer. Cook for about 15 to 20 minutes or until the potatoes are fork tender.
In a small saucepan, add the heavy cream and butter. Heat for 3-5 minutes.
Drain the potatoes and return them to the hot pot. Let them sit for about a minute. This helps the steam escape, giving you a fluffy mashed potato.
Use a potato masher to mash the potatoes.
Add the warmed heavy cream mixture to the potatoes. Mix until you get your desired consistency. We like some chunks.
Add salt and pepper to taste. Serve warm, topped with butter and chives, enjoy!