Excuse me, I was stuck on 250g Box. One Pound Box, uh yea, you’ll have to use a few jars.
With that much tobacco, you may need to cut the flake in half, so that you don’t have a large amount of air. For a 250g box, I used 2 16oz Mason Jars. The full Flakes fit in the jar in the shape of a U. The second jar didn’t have as much tobacco in it, so that’s the jar that I pull from. There is a large amount of air in that jar. If air is a concern for you, then cutting and filling smaller jars is the way to go.