If it is in terms of expiry, we can only advise choosing a suitable coffee size to achieve a total consumption.
We know that our coffee has been tested to achieve peak flavours from 2 - 5 weeks and begin to degrade in experience after this time frame.
Our 250g bags should offer 1 to 2 weeks of coffee. The calculation would be to divide 250g by the brewing size.
20g : 12 serves
18g : 13 serves
16g : 15 serves