Shelf life definition

Shelf life specifies the period of time which a product can be stored, under specified conditions, and remain in optimum condition and suitable for consumption.

A product's shelf life or safe storage time of a product, is affected by a number of variables, including intrinsic parameters, such as pH and moisture content, and extrinsic parameters, such as environmental factors.

Use by date: product should be used/eaten by the date mentioned on the packaging (use by term is placed on highly perishable foods which may pose a health risk if they are used beyond that date). Equivalent to expiry date.

Best before date: it is more about quality than safety, beyond the date there might be deterioration in appearance and taste (Best before date is used on more stable products such as flours, FBF, etc.). Equivalent to BUBD (Best use before date) and Best until date.