When I first started using leeks I had no idea how to wash them properly. It seemed impossible to clean under all of those layers of leaves. Well here's the trick-
- Slice halfway through the leek, up the entire stem.
- Turn the leek 90 degrees, and slice again, only letting your knife go halfway though.
- Turn 90 degrees one more time and make one more slice the same way, not cutting all the way though.
The leaves should now all fan apart making it much easier to clean! Rinse leaves thoroughly under running water, pulling them apart to get to the center ones. Pat dry.
Enjoy your leek :)