1 bunch arugula
1 leek, white and light green parts only, thinly sliced
1 apple, cored and sliced (these first three ingredients all came from my box)
balsamic or cider vinegar
handful of walnuts, toasted
1) Wash and dry the arugula. Put it into a salad bowl.
2) Heat olive oil in a skillet, and add leeks and a pinch of salt. Sautee for a few minutes, and add the apple slices. Saute a minute more, and then add enough vinegar just to cover the apples. Lower the heat, allowing the apples to absorb the vinegar, and for the rest to reduce a bit.
3) While still hot, pour the apple mixture over the arugula. Add the nuts, and cheese if desired. Finish off with a touch of walnut oil, and salt and pepper. A salty or pungent cheese can be added if desired.