Exercise your brain to make a salad

Remember a while ago I wrote about a mandoline that Cindy gave me? I finally decided to figure out how to use it, and at the same time use the ingredients I had in my refrigerator to make a salad.

Red cabbage salad with red pepper, carrots, onions and arugula

Ingredients
1/2 red cabbage thinly sliced
1 red onion, thinly sliced
1 carrot, thinly sliced
1/4 red onion, minced
1 small bunch arugula, thinly sliced
1 tablespoon sunflower oil
1 tablespoon walnut oil
1 tablespoon vinegar

Directions
1. Combine all ingredients in a bowl, and serve.

P.S. "exercise our brain" refers to using my brain cells to learn something new: how to use a mandoline.