Olivier salad the dressing — was a jealously guarded secret, but it is known that the salad contained grouse, veal tongue, caviar, lettuce, crayfish tails, capers, and smoked duck, although it is possible that the recipe was varied seasonally. The original Olivier dressing was a type of mayonnaise, made with French wine vinegar, mustard, and Provençal olive oil; its exact recipe, however, remains unknown. At the turn of the 20th century, one of Olivier's sous-chefs, Ivan Ivanov, attempted to steal the recipe. While preparing the dressing one evening in solitude, as was his custom, Olivier was suddenly called away on some emergency.
Vinegar pickling liquids, and vinaigrettes and other salad dressings. It is an ingredient in sauces, such as hot sauce, mustard, ketchup, and mayonnaise. Vinegar is sometimes used in chutneys. It is often used as a condiment on its own or as part of other condiments. Marinades often contain vinegar. In terms of its shelf life, vinegar's acidic nature allows it to last indefinitely without the use of refrigeration. Several beverages are made using vinegar, for instance Posca in ancient Rome. The ancient Greek oxymel is a drink made from vinegar and honey, and sekanjabin is a traditional Persian drink similar to