By THÉRÈSE MARGOLIS     Ah, dessert! That delicious, delightful, delectable palate-pleaser that is the nectarous climax and true pièce de résistance of any great meal, enthralling your taste buds with luscious sweetness and providing an ambrosial flourished finale to the dining experience. Whether it be a simple bowl of vanilla ice cream or an elaborate Parisian profiterole, no meal is truly