Wash the onions (or young leeks). Cut into about 3 in. wide pieces and in half lengthwise.
Cut into julienne slices.
Immerse them in cold water for about one hour.
Make the dressing sauce in a bowl.
Drain the cold water from the onions. Mix them with the dressing sauce.
Long green onions are immersed in cold water to reduce their bitter taste.
Japanese foods recipes