This is not so much a recipe as it is technique. Get ready for some of the best fries you've ever eaten! The oregano is a must, IMHO, but if you haven't got it, do without. Your loss.
- In a large bowl, cover the potatoes with water.
- In a deep fryer fitted with a basket or a heavy medium saucepan, heat 3 inches of vegetable oil to 340°F.
- Drain the potatoes and pat dry with paper towels.
- Add half the potatoes to the oil and cook until they begin to blister and turn golden, about 15 minutes.
- Shake up the basket every once in a while (not too often – especially in the beginning when the fries are still soft), or run a fork through the saucepan to make sure fries are not sticking together.
- Spread the fries on paper towels to drain and cool.
- Repeat with remaining fries.
- (Fries can be made to this point up to 4 hours in advance of serving).
- Heat the oil to 375°F.
- Add a quarter of the fries and cook until browned and crisp, 1 to 2 minutes.
- Drain on paper towels and repeat with remaining fries.
- Sprinkle with sea salt and some oregano.