Add cold water, 1 tablespoon vinegar and ~1 tablespoon salt to a pot.

Add the potatoes, bring the water to a boil and reduce to a simmer. Par-cook potatoes until the exterior is tender but the inside is still slightly firm when pierced with a fork, about five minutes.

Drain the potatoes from the water in a colander, shaking occasionally to scuff of the exterior of the potato. This creates more surface area to crisp up during baking.

Add potatoes to a large bowl, add oil, and salt and pepper generously to taste. Mix with a metal spoon if your colander didn't adequately scuff the potato's exterior.

Place potatoes evenly on a baking sheet and bake at 500 degrees for 40 minutes, or until crispy. Flip potatoes with spatula halfway through cooking.

Taste for salt, adding more as needed and serve!