If you find yourself in the Aomori, Japan airport and you’re feeling a mite peckish, hit up the convenience shop and have some fresh clams. I watched the guy replenish the tank. Grab a bag. Grab some clams, and voila, you too could sit in front of gate and crack’em open for a tasty delight.
Here’s the guy loading up the tank.
Here is a side shot of the tank.
Here they are from the top.