The shelf life of soufflé is usually about 10 days when sealed at room temperature, and 1-2 months when sealed and frozen. The soufflé is a snack made of fried egg yolks, medium gluten flour, sugar and cream. , very popular with consumers. Egg crisp is a snack with filling. Because of the short storage period of the filling, the shelf life will not be too long. Shelf life is usually the period of time during which a prepackaged food can maintain its quality under the storage conditions specified on the label. During this period, the product is perfectly fit for sale and retains the unique qualities that are not required to be stated or have been stated in the label. In general, the shelf life of food involves not only the single dimension of time, but also the environment in which the food is stored. The shelf life of a food product has to be analyzed in the context of the specific storage state.