I load straight from a 12 ounce can of Granger until it’s gone. The top layer can get a bit dryer, but that’s what I’m loading up with so, win-win.
If you’re looking to age something, then leave it alone or.. better, use smaller jars that once opened you can smoke through in reasonable time. That way the rest of your tobacco stays airtight. — If you believe that aging does much.
I smoke burley scraps.