My elder daughter used to work in an ice cream shoppe (around since 1928) and there would often be a little left over from filling the 3 gallon tub. They packaged the leftover but didn't add the 'extras' (e.g. Maple Nonuts), giving these to the employees to take home.But if the machine determines that it was a "low fill" then employees get to have those but the beers never make it to the labeling line and end up in unmarked cans.
I called it 'Retirement ice cream' because it was free.
Retirement beer ??