In a large pot, combine potatoes, vinegar, and 1 tablespoon salt. Bring to a boil over high heat, then reduce heat and simmer for 20-25 minutes, or until potatoes are tender.
Drain potatoes and let cool completely on a baking sheet.
Preheat oven to 390°F (200°C).
Toss cooled potatoes with olive oil, remaining salt, and pepper.
Spread potatoes in a single layer on a baking sheet and bake for 25-30 minutes, or until golden brown and crispy.