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.
Mustard (condiment) Mustard (condiment) Mustard is a condiment made from the seeds of a mustard plant (white/yellow mustard, "Sinapis alba"; brown/ Indian mustard, "Brassica juncea"; or black mustard, "Brassica nigra"). The whole, ground, cracked, or bruised mustard seeds are mixed with water, vinegar, lemon juice, wine, or other liquids, salt, and often other flavorings and spices, to create a paste or sauce ranging in color from bright yellow to dark brown. The taste of mustard ranges from sweet to spicy. Commonly paired with meats and cheeses, mustard is also added to sandwiches, hamburgers, corn dogs, and hot dogs. It is also used