Preparation Preheat oven to 375°F. Stir together oil and garlic in a large bowl. Peel potatoes and diagonally cut crosswise into 1/2-inch-thick slices, discarding ends. Toss slices with garlic oil, then arrange in 1 layer in a large shallow baking pan (1 inch deep) and sprinkle with kosher salt. Roast potatoes in lower third of oven until undersides are golden brown and crisp, about 1 hour. Turn potatoes over with a metal spatula and roast until tender, about 15 minutes more. Season potatoes with salt and transfer, crusted sides up, to a platter.
Preparation Preheat oven to 375°F. Stir together oil and garlic in a large bowl. Peel potatoes and diagonally cut crosswise into 1/2-inch-thick slices, discarding ends. Toss slices with garlic oil, then arrange in 1 layer in a large shallow baking pan (1 inch deep) and sprinkle with kosher salt. Roast potatoes in lower third of oven until undersides are golden brown and crisp, about 1 hour. Turn potatoes over with a metal spatula and roast until tender, about 15 minutes more. Season potatoes with salt and transfer, crusted sides up, to a platter.