Last night, I went out drinking to an izakaya (a Japanese style pub, to put it simply).
Carbonated (fizzy) water seems to be all the rage in Japan recently, and though I hadn't thought much of it, I caught a Japanese TV programme saying that carbonated water helps ease the stomach, and that if you were planning to go out drinking, it was advised that you drink a bottle of carbonated water just beforehand.
I managed to gulp down about half a bottle, and though I didn't have a lot to drink, I felt pretty good, in a tipsy way. Also, I have a huge appetite, but probably due to the fizz which filled me up, I didn't each as much as I usually do.
Maybe I could've cut down on my portions more had I drunk the whole bottle.
I also found that carbonated water seems to be cheaper than regular mineral water - good news for us paupers. I got mine for around 80yen.
For anyone hoping to cut down on food quantities, or for those who are about to run on an enkai high, it might be worth trying out.