Vinegar base or mayo base? Or neither?
My 'go to' dressing for it uses evaporated milk, vinegar (I prefer cider vinegar, but white works), sugar, salt and pepper.
Pour the milk into a mixing bowl. Add salt and pepper, then while mixing with a fork or small whisk, add vinegar slowly til it clabbers. Add sugar to balance the vinegar, adjust salt and pepper.
What do you use?