Vinegar/ˈvɪnɪɡər/ Definition 1 of 2Pro Tip 1/3Culinary Versatility Vinegar is used in various cuisines worldwide, adding flavor or preserving food. I use vinegar to pickle vegetables and marinade meats. Pro Tip 2/3Acidity in Taste Vinegar gives a sharp and tangy flavor, enhancing the taste of dressings and sauces. A splash of vinegar balanced the sweetness of the barbecue sauce. Pro Tip 3/3Not for Sweetness Unlike its common pairing with oil, vinegar contributes sourness, not sweetness. To correct the dish's sweetness, I added a bit of vinegar.