I want to add an update to this review...
I recently added this mix to a 50/50 blend of mayo/sour cream to make a veggie dip. It was great. I would say it would also be great for chips, or if you thin it with a little milk, it would make a great ranch dressing. Again - I left out the salt.
This is the best, simplest, most useful & versatile recipe I have found for italian salad dressing on this site. It is wonderful as is, and I have made it several times with modifications per our taste of the day. I've used olive oil, canola, red wine vinegar, cider vinegar, balsamic and combinations of these. I have also substituted salt-free seasoning (just the cheap kind from Big Lots) for the salt. These changes all work well. Substituting Marjoram or Savory for the Thyme, celery seed for celery salt, 1/2 garlic powder for the garlic salt also works well. Sometimes I add a squirt or two of spicy brown mustard when mixing in the oil & vinegar. Thanks for submitting it.