Having eaten et el bulli this year, and obviously eaten the carrot foam, i should say that it arrived wobbly, and not frozen. we ate it fairly slowly, obviously it is a bit of a discussion course with lotsof prodding and poking, and it remained pretty stable throughout. It does "melt" a little into an intense orange/carrotty liquid if you leave it. But it does not disap[pear into nothing when you eat/drink it. It turns into a small amount of liquid, akin to carrott juice. It is definately not frozen. I have have tried with limited success to recreate this. My initial feeling was to act like a child (of course) and blow bubbles into it. this works well but you would need superhuman cheek strehgth to get the required bubbles. maybe he has some kind of high powered blowing machine (no rude jokes please!) and a big bucket?
