The above is a Kilner jar containing Dunhill Nightcap.
It was purchased in a tin and immediately upon opening i transferred it to the jar. How long can I reasonably expect it to keep whilst smoking a bowl or 2 every week from it? I am not asking how long till I run out, I mean how long till it goes "off" or however you would describe it.
If I purchase more before the jar runs out is it a good idea to just top it up and give it a shake or is it more sensible to wait till completely empty and maybe give it a wash before refilling?