Combine all dressing ingredients in a small-ish bowl or a quart jar with lid, and whisk well. If you like a thicker dressing (for using as a vegetable dip, for example), add a bit more sour cream. Taste and adjust seasoning if necessary. Cover and chill until ready to serve. This can be prepared a day in advance, and actually helps to better marry the flavors. Keeps well in the refrigerator for up to a week. Serve with fresh greens or as a dip for raw vegetables.

We most often double this recipe. This works well for entertaining or for having enough to enjoy a few salads during the week.