Trim leeks of all green parts. Cut them in half lengthwise. Holding each half together.
Wash all grit away under cold water. Pat dry with paper towels. Lay each half, cut side down, on a cutting board. and slice lengthwise into fine julienne. Again pat dry with paper towel.
Heat oil in non stick pan over medium heat. add the leeks and fry for about 3 minutes or until golden and crisp. Remove to paper towels and allow to drain well. Season to taste with salt.
When reheating, lay in a single layer.