Open Dating

Open dating is the practice of printing a calendar date on a perishable product in plain, human-readable form, so that a shopper or a store clerk can look at the package and know roughly how fresh the contents are. It stands in contrast to closed or coded dating, where the manufacturer prints a packing code that only the producer can decode — useful for tracking and recalls, but meaningless to the customer at the shelf. Open dating comes in several common forms. A sell-by date tells the store how long to display the product. A use-by date is the maker's estimate of when peak quality ends. A best-before, or best-if-used-by, date signals when flavor and texture are at their best. Each phrase points at a slightly different idea, which is why reading the exact wording matters.

Open dating matters to marketing because the date on a package quietly shapes trust, waste, and repeat purchase. A shopper who can read a clear date feels more confident buying perishable goods, and a clear, generous date can reduce the friction of choosing fresh products. For retailers, open dating supports stock rotation — selling older stock first — and helps avoid the embarrassment of out-of-date goods on the shelf. But the very readability that builds trust can also mislead, because shoppers often treat any printed date as a hard safety deadline. That confusion drives avoidable food waste, since perfectly good food gets thrown out the day after a best-before date that was never about safety at all.

The single most important distinction inside open dating is between a best-before date and a use-by date, because they answer different questions. A best-before date is about quality. After it passes, food may lose crispness, color, or flavor, but it is usually still safe to eat — think of a bag of crackers that goes a little stale rather than dangerous. A use-by date is the one tied more closely to safety on highly perishable items such as fresh meat, fish, or ready-to-eat foods, where eating the product well past the date carries real risk. Treating these two as the same is the common error, and it is an expensive one, because it sends edible food to the bin and trains shoppers to over-discard.

Sell-by dates add a third wrinkle. A sell-by date is a message to the retailer, not the shopper — it marks the last day the store should display the item, leaving a buffer for the product to be used at home afterward. Many shoppers misread a sell-by date as a use-by date and throw food out early, which is why some markets have moved toward standardizing date wording to cut confusion. For a marketer or a packaging team, the lesson is to use the clearest, most accurate phrase for the product, because vague or alarming date language erodes both trust and the environmental claims a brand may want to make. Honest, well-chosen open dating is a small design choice with an outsized effect on waste and perception.

Using open dating well means choosing the date phrase that truly fits the product, printing it where shoppers can find it, and not letting a quality date masquerade as a safety deadline. For a fresh, high-risk food, a use-by date is appropriate and should be respected. For a shelf-stable or low-risk item, a best-before date communicates peak quality without implying danger, and brands increasingly pair it with short guidance like "often good after this date" to fight needless waste. Retailers should treat sell-by dates as internal rotation tools and design shelf signage so the customer-facing date is the one that matters. Consistent, plain wording across a range builds shopper confidence and makes a brand's sustainability messaging credible rather than hollow.

The failures are predictable. Printing alarming or ambiguous dates trains shoppers to bin edible food, which clashes with any waste-reduction claim a brand makes. Mixing up sell-by, use-by, and best-before language across a product line confuses customers and undercuts trust. Hiding the date in tiny type, or in a spot the package design covers, defeats the purpose entirely. And treating a best-before date as a hard safety cutoff — in marketing copy or on the shelf — spreads the very confusion that drives waste. The discipline is to match the phrase to the real risk, make it readable, and be honest that a best-before date is about quality, not safety.

Open dating — printing a readable sell-by, use-by, or best-before date on perishable goods — helps shoppers and retailers judge freshness, though a best-before date signals quality, not safety.

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