Not worth the trouble. In order to get any real amount of liquid into the smaller cylinder, you're going to need to cool that receiving cylinder with ice and salt or dry ice in order to condense enough to make it worthwhile. Given the cost of ice/salt, or dry ice, you're economically much better for looking around for the occasional sale on the OEM variety. Now, if you want to carry around that adapter, and refill the little cylinders every time you use them that's a different story. You can probably cook one meal with the amount of gas you'll be able to transfer.