4 large yellow-fleshed potatoes or sweet potatoes (2 pounds total), scrubbed well
3 tablespoons Roasted Walnut Oil
1 teaspoon kosher salt
1/4 teaspoon black pepper
3 tablespoons Traditional 18 year Balsamic Vinegar
Put oven rack in lower third of oven and preheat oven to 450°F. Halve each potato lengthwise, then cut each half lengthwise into 4 wedges. Toss potato wedges with Walnut oil, salt, and pepper in a 17- by 11-inch shallow baking pan (about 1 inch deep) and arrange in 1 layer. Roast potatoes, turning over once, until golden brown and cooked through, 20 to 25 minutes. Sprinkle with 2 tablespoons vinegar, roast until vinegar has a turned into a glaze, about 3 minutes.