Burnished Potato Nuggets

Preheat oven to 425°F. Place potatoes in a large pot and pour in water to cover by 2". Season water generously with salt and bring to a simmer over medium-high heat. Reduce heat and simmer gently until potatoes are tender on the outside but still very firm in the center, 8–10 minutes.

Pour off water in pot, holding potatoes back. Toss potatoes just enough to rough up their outsides and give them a floury starchy coating (do not toss so vigorously that they fall apart); season with salt.

Meanwhile, combine both oils in a large roasting pan and heat in oven 10 minutes.

Carefully remove pan from oven; add potatoes, turning each one to coat and moisten exterior. Return pan to oven and roast potatoes, turning every 10 minutes, for 30 minutes. Toss in garlic and rosemary and cook until potatoes are deep golden brown on most of their sides, 8–10 minutes. Using a slotted spoon, transfer potatoes to a platter and serve with roasted garlic and rosemary alongside.