Depends how quickly one intends to use it. As a relatively slow smoker (0-3 bowls per week), I would put anything that isn't in circular/cylindrical tins into Ball jars. Even those square/rectangular Capstan/SG/G&H/Peterson/Mac Baren tins are known to lose their seals unexpectedly. Just to be on the safe side...Quick question. Do you leave the SG in the frozen food dish, or transfer to jar/mylar immediately? Thanks!