So the next time you go on a shopping spree for coffee and/or received from your coffee supplier bags of coffee that is already 3 weeks old, do not panic and put on your bitching cap. If the coffee is meant for the advanced week buffer, take solace that in general all the coffee is best within a month of roast (which means that you still have enough time to finish consuming/serving them). If they are to be used right away, recall the highlighted point in the 2nd paragraph on the porosity of the bean structure and calibrate the grinder to the best of your ability. When all failed, call upon your roaster and get someone to come down to calibrate them to taste. Often then not, they are happy to provide the service.
Receiving a 2, 3 or 4 week old coffee is all about transparency at its best. This mean the roaster care to remain honest in featuring the true roasting dates as well as having test taste the coffee and passing it as good to be served and delivered. They also have hopes that the receiver is experienced enough to calibrate and fine tuned the coffee to taste as per profiled.
To avoid unwanted questions and avoid high conflict scenarios, roaster can always 'changed' the dates to 'packed by instead of roasting dates.' This is unethical but too often, we are all blinded by the facts on the bags rather than tasting to calibrate and believe, which result in roaster feeling less obliged to be transparent.
So be happy when you received the supply which indicated it is 3-weeks old. The least it reflect the honesty of the roaster. Take up the challenge and try to calibrate the coffee to its best. Then again, it is tolerable when it is an isolated situation but if you constantly received a 3-week old coffee, something may be wrong and then it is within your given jurisdiction to ask why.....