Trim the leeks, leaving 1 inch of green. Cut the leeks in half lengthwise.
In a small bowl combine the water and vinegar. Soak the leeks for 15 minutes to remove sand. Rinse well under running water, and cut into fine dice. Place in a bowl.
Cut the carrots into fine dice. Add to the leeks.
Cut the parsnips into fine dice. Add to the vegetabl