Simple salad dressing

I use a small glass lid jar and the salad dressing mixer.  It's a bit different from the typical vinegar, olive oil found at the Spanish restaurants, mine dressing will be pre-mixed.

1/3 of red wine vinegar and 2/3 of olive oil, dash of salt and generous amount of pepper. Shake the jar well, and that's simple and as good as store bought salad dressing.