Buttermilk Mashed Potatoes

• Yukon gold potatoes or russet potatoes, about 2½ pounds, peeled and cut into large chunks
• Salt and freshly ground pepper

In a large saucepan, combine the potatoes with salted water to cover generously. Bring to a boil over medium heat, cover, and simmer, stirring once or twice, until the potatoes are very tender when pierced with a fork, 25–30 minutes.

Just before the potatoes are ready, in a small saucepan over medium heat, combine the milk, butter, and buttermilk and heat until the butter has melted and