
Creamy, buttery mashed potatoes are one of those dishes that feel like a warm hug, and this version delivers that comfort in every single bite. Yukon Gold potatoes are the real star here — their naturally waxy, golden flesh breaks down into something impossibly silky without turning gluey. Warming the buttermilk and butter together before folding them in is a small step that makes a big difference, keeping the mash fluffy and light rather than dense and stiff. A touch of white pepper adds gentle heat that blends right into the background, letting the rich, tangy buttermilk flavor come through cleanly. For anyone navigating grain sensitivities, this recipe is naturally free of any rye or grain-based thickeners — just potatoes, dairy, and seasoning doing all the heavy lifting. Finished with a scatter of fresh chives, it's elegant enough for a holiday table but easy enough for a Tuesday night.
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Place the potato chunks in a large pot and cover with cold water by at least 1 inch. Add 1 tbsp kosher salt and bring to a boil over high heat, then reduce to a steady simmer and cook until the potatoes are completely tender and a fork slides through without resistance, 18–22 minutes.
While the potatoes cook, combine the butter and buttermilk in a small saucepan over low heat, stirring occasionally, until the butter is melted and the mixture is warm to the touch but not simmering, about 3–4 minutes. Remove from heat.
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