I'm Italian and, as you know, we make a big deal out of coffee.
I found some people to be very much convinced that ground coffee preserves its taste better when stored in the fridge. On the other hand, there's a whole lot of other people claiming the exact opposite.
The National Coffee Association, suggests airtight and cool but it discourages the refrigerator, in order to avoid the contact with moisture. But if the container is airtight, shouldn't this issue be greatly mitigated? The fridge looks like a great candidate for the cool requirement, and an airtight container seems to be a good solution to the moisture issue.
Another downside, as mentioned in this article, is that coffee tends to catch odors. Again, this issue can be easily overcome with the help of a sealed container.
On the other hand, Lavazza (a big Italian manufacturer of coffee products) explicitly advises to keep the coffee in the fridge in an airtight opaque container in a Tip for freshness section on its packages. (click to see the full-size picture)
However, I couldn't find satisfying scientific support to either claims.
Is storing coffee in an airtight container in the fridge the best way to preserve its flavor?