I make my own salad dressing, it tastes better and it's much cheaper than the grocery store bought stuff too.I need salad dressing to choke it down, which is way too salty, so I gave it up. It's also very expensive for the little nutrition you get from it.
It's just some homemade red wine vinegar and EVOO mixed with herbs and spices that I grow myself. No salt or bullshit chemicals to increase it's shelf life are needed.