What food product date-labeling phrase always relates to food safety?

The phrase that always relates to food safety is the "Expiration date." This date indicates the last day a food product is guaranteed to be safe to consume, as determined by the manufacturer. Products that are consumed after this date may pose a safety risk, as they may no longer be safe to eat or could have a significant decline in quality.

In contrast, other date labeling phrases do not necessarily indicate safety. The "Best if Used By/Before date" refers to the quality of the food rather than its safety, meaning the product may still be safe to consume after this date, but its taste or texture might not be as desirable. The "Sell By date" is primarily for retailers to manage inventory and does not directly indicate the product's safety for the consumer. Similarly, the "Packaged On date" informs the customer about when the product was packaged but does not imply any information about safety or expiration.

Therefore, the "Expiration date" stands out as the phrase that directly addresses the safety of consuming the food beyond a certain point.