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, butter, and minced garlic. 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.
Add the warmed heavy cream mixture to the potatoes. Use a potato masher to mash them.
Add salt and pepper to taste. Serve warm, topped with butter and chives, enjoy!