I am not sure how they did the coral on this particular cake but I do know that not too very long ago someone on here had a post that was about making coral using crushed ice and chocolate melts. If I read it correctly they said they melted the chocolate in the colors they wanted and poured it over the ice so that it made that nice coral texture. Since the chocolate will harden very quickly in the cold. You may be able to do a search and pull the topic up. Sorry I don't have the link for you. Its been a while. Good luck to you
hi i used RI to pipe it on the sides of the last cake i did. i am interested in this topic myself as i need to do another soon and i did the previouse by complete guess work!
I used the crushed ice and it works great. Just put your ice in like a pie plate and pipe you melted chocolate onto the ice in the shape of coral. It hardens quickly and you can just lift it right off!!!
Thanks everyone, I'll definately have to try the crushed ice method, sounds easy enough.