A tangy french-style salad dressing. Kraft markets the most famous variety. As with most condiments, you're much better off just making your own instead of buying the off the shelf stuff (it's cheaper and tastes better, and you can customize it to your desires). Here's how easy it is:
2/3 cup ketchup
1/2 cup oil (I use canola, any veg. oil should work)
1/2 cup red wine vinegar
1/2 cup sugar (honey subs really well)
1 tsp garlic powder
1 tsp onion powder
Put all ingredients in large mixing bowl. Whisk until thick (the oil and vinegar emulsifies). Serve over salad. Store in gravy boat in fridge; keeps about a week without separating.