Big thanks to Rafael for bringing me a couple of bottles of this when we met in Tokyo:

That is a bottle of sparkling green tea. Yes, green tea with bubbles in it. It’s a little strange; something seems to have happened to the flavor in the carbonation process. Tracie’s reaction was one loudly voiced obscenity. I guess I’m not surprised that it’s disappearing from the market, according to Rafael.
He also brought me a bottle of sparkling soy milk. I’m trying to summon the courage to try that one this evening.
When I was working at a coffee shop, at one point there was some confusion wherein carbon dioxide and nitrous oxide cartridges were mixed up, resulting in carbonated cream rather than whipped cream. It wasn’t as firm, and it was very odd to get that carbonated “bite” when tasting what looked pretty much like whipped cream…
Reminds me of my attempt at carbonating milk (cows) as a kid with a Sodastream. Verrrry messy.
You are a braver man than I!