Prior to releasing products to the marketplace, Blue Diamond® conducts extensive shelf-life testing to determine optimum longevity both unopened and opened. The recommended Best Before Dates are based on the established optimum longevity of the product.  We will not recommend consuming any product past its shelf life, nor will we guarantee its freshness or quality. If the overall characteristics in appearance, smell or taste vary from the norm, then do not consume the product as any variation may be indicative of spoilage.