We stumbled across videos of konapun a while back. It's a Japanese toy. I'll let the video poster, RRcherrypie, explain:
(1) It's not edible.
(2) It doesn't cook with actual heat. It is just powder and water with the sound effects.
(3) The fake food made of Konapun will rot soon.
(4) It's not for children under 8 years old. And must do play under the adult.
Basically, it's chemicals that are made to look like food. The kits make elegant looking meals and deserts, so it's a shame you can't eat them. There are a lot of videos and they're rather addictive. Visit RRcherrypie's site if you'd like to see more.