Copenhagen user here......as far as "storing" (if there is such a thing) I've always found that refrigerating may keep it fresh for a short period of time, but it tends to dry out much quicker once you remove it from the fridge than it would had it been stored at room temperature. The only blend I've ever had satisfy my nicotine craving is Nightcap, but only after 2 successive bowls. And by "satisfy" I mean that I didn't feel the need to take another dip before going to bed that night. The nicotine tolerance I've developed over time from Copenhagen (about 15 years) is extremely high. I've considered kicking the Copenhagen lately but I'm afraid I'd have to smoke SG Brown No.4 multiple times a day to keep the cravings at bay. For the last few months I've been trying my hardest to only take one dip a day (coming from 1 - 1.5 cans a day) and supplement with a pipe when I can. It's tough though because the Copenhagen is so much more convenient on the go. I rarely have time for multiple bowls a day.