Of course, this "dish" couldn't be brought into a three-Michelin-star environment without slight modifications. Edible balloons are made from a viscous mix of green apples and sugar, which is carefully inflated into a balloon shape. The string of the balloon is dehydrated apple. The helium is still helium.
There are two ways you can eat the edible balloon, and neither offers a single chance of retaining your dignity. The first is to use the pin that comes with the balloon to pop it, after which you presumably spend the remainder of your dinner scooping up its sad remains from all over the table (and your face). The second is slightly less messy, but no less ridiculous: You press your face hole in the side of the balloon and suck it up, along with all the helium inside. This has the benefit of both making you look like a moron and giving you the helium voice.
We're betting that the second after you finish the edible balloon, the waiters come asking you complicated questions just for the hell of it.