Place potatoes, vinegar, salt and garlic in a large saucepan and cover with water.
Bring to a boil. Turn temperature down and allow potatoes to boil about 20 minutes or until tender.
Drain and cool
Preheat oven to 450degrees Fahrenheit
Coat baking pan with non-stick olive oil spray
Toss the potatoes in the oil and put in baking pan
Roast for about 20 minutes or until crispy and brown
Season to taste with salt and pepper