04Using electric mixer, beat remaining 1/2 cup cream in large bowl until stiff peaks form. Fold in barely lukewarm melted chocolate mixture in 2 additions, then fold in crème fraîche. Divide mousse among 6 dessert glasses, leaving enough space at top of glasses to spoon granita over. Cover and chill until mixture firms up slightly, at least 8 hours or overnight. DO AHEAD: Can be made 2 days ahead. Keep chilled.
05Using fork, scrape surface of granita, forming icy flakes. Top each glass of mousse with generous amount of granita, dividing equally. Drizzle each lightly with pomegranate syrup. Sprinkle with pomegranate seeds and serve immediately.