Leeks add a wonderful flavor to almost any recipe that calls for onions. I told the students in my cooking class that I would post a quick tutorial.
Leeks grow straight up out of the ground which causes quite a bit of dirt to get into its crevices. Most recipes use just the white and yellow part and discard the green tops.
The easiest thing to do is to just chop off the green tops and a little of the bottom. Then slice the leek in half lengthwise. Hold the half under running water and run your fingers through each "layer" to thoroughly remove the dirt. Them simple slice the leeks to the desired width. For my favorite leek soup recipe click here.