juice is the component you want to stock up on.. 1000-2000 ml would be a great start.
Just how do you properly store that much juice? Isn't the shelf life just a few months?
I'm not worried about any ban at this time. If it would happen, it would be in the news long before it ever went thru, which would give me time to stock up. Laws don't become laws in one day. First, one group has to pass it, then another and then another. We would have ample warning.