Yogurt or Buttermilk Vinaigrette

This is a simple yet delicious basic vinaigrette. I like that you use buttermilk or yogurt instead of some of the oil typically used in a vinaigrette to make this a more health conscious dressing. I used buttermilk. It says you can thin with a bit of water if desired but I didn't. I loved the flavor the Dijon gave to this dressing along with the buttermilk. This was delicious on my simple spinach, tomato and onion salad.