How do you make the sugar mixture for molding like in this beautiful vase by lflowermoon

http://www.cakecentral.com/modules.php?name=gallery&file=displayimage&pid=1258699

Thank you for your help. Julia

I think it is just granulated sugar plus few tblsp of water then you pack it into a mold and unmold it and then dry it in the oven for 25 or more minutes 200 degrees.