To unmold the bombe, dip the mold several times into a bowl of warm water, run a long thin knife around the outer rim of the mold and the rim of the center stem, and invert the bombe onto a platter, Coat the bombe with the ground macadamia nut praline.The bombe may be made 3 hours in advance and dept frozen. Garnish the top of the bombe and the platter with the sugar-candy.