I've had jellyfish a few times before, but I picked up a package today just for fun. It's an inexpensive venture -- about a buck for a package of "Instant Jellyfish" containing a pouch of wet, thinly sliced jellyfish, a pouch of seasoning (inc. dehydrated scallions), a pouch of sesame oil, and a pouch of chili oil. (I chose the "sesame and chili" flavour -- they do have others.)