Wine vinegar blended with raspberry juice for a flavor that has the sweetness of berries, yet is mildly acidic. Flavored vinegars are used in marinades for meat, poultry, fish and seafood, as well as a variety of dressings and sauces. Raspberry wine vinegar adds a unique flavor to vinaigrettes, which provides a sweet but acidic taste when sprinkled on salads, vegetables, and pasta.