On cans, most date codes are printed on the bottom—and in the case of Oskar Blues, there’s even a special phrase or witty message.
Most beer bottles have some sort of date on them, but figuring out what they mean can be a bit confusing.
The beer inside hasn’t expired, but it’s not longer considered “brewery fresh” and most companies no longer want it to be sold.
Many brewers will buy these bottles back from a retailer a full retail price, so there is no reason to keeping old beer on the shelf.
For bottles, date codes are often printed on the neck or shoulder (the section just above the label).
If the specific attribute is no known, you can enter "unknown," where allowed.
You must enter all of the attributes for the engine to function correctly and give an accurate estimate.
For experienced users, you may choose one of two different single page dating engines, for either glass or pottery bottles.
Only bottles from Canada and the United States are currently supported, and dating ends at 1920.