I did my own semi-scientific test of this in my own hot-sauce recipe about 2 years ago. Tried several vinegars -- "White", Cider, Wine, Basalmic (wine), and even Rice-Wine. (and compensated for the relative acitity). I determined that all of the "natural" vinegars imparted their distinctive flavor on the result and that I liked the "White" vinegar the best for the lack of other flavors. -- Will McCown, South Pasadena, CA