There's nothing better than the smooth, creamy texture and one-of-a-kind flavor of Duke's mayonnaise, made with Eugenia Duke's original recipe since 1917. Dukes is delicious on sandwiches, in salads, and even as a key baking ingredient. Mayonnaise, according to the U.S. FDA, must contain at least 65% oil by weight, vinegar, and egg or egg yolks. Furthermore no emulsifying agents other than eggs are allowed, and real mayonnaise does not contain any starches or gums. Duke's mayonnaise is real deal. This may be part of the reason that Duke's mayonnaise has a loyal following here in the South; the appreciation of this truly great mayonnaise is used in countless regional recipes and by numerous great chefs. Unopened jars of mayonnaise may be stored at room temperature and refrigerate the jars after opening to keep the fresh flavor of the mayonnaise.