I followed the directions as indicated on the package of Folgers coffee singles. I bought these about 5 years ago for a backpacking trip, and I periodically have a cup to see how long it remains "good".
I haven't taken any special precautions for the storage, and they have been in the pantry for the entire time.
Sweetheart didn't notice any difference in the taste. My only complaint is that I probably should have let it steep for a little longer for a stronger cup of coffee. This might be the only noticeable difference between new and my old coffee singles.
So, there you have it. Folgers coffee singles can provide a person with their morning cup(s) of coffee four years and 4 months past the best if used by date without any special storage techniques.
Keep Right On Prepping - K