<<Disclaimer: Verify this information before applying it to your situation.>> Here's a reply I got from the Mezzetta Co. ([log in to unmask]) when I asked about the vinegar used in their Peperoncini: > Mezzetta Brand Golden Greek Peperoncini is packed with white distilled > vinegar. > > Mezzetta brand products that do not contain white distilled vinegar but > rather citric acid or lactic acid as an acidifier include the following: > > Roasted Red Bell Peppers, Roasted Yellow & Red Sweet Peppers, Roasted > Jalapeno Peppers, Spanish and Spanish Style Olives, Jalapeno Stuffed Olives, > Garlic Stuffed Olives, Salad Olives, Nicoise Olives, Sun Ripened Dried > Tomatoes and Grape Leaves. > > Wine vinegar is used in Mezzetta Brand Calamata Olives and Calamata > Tapenade. > > I hope this information is helpful. > > Kathy / Customer Service