Frozen Double Chocolate Mousse

• 6 egg yolks
• 1/2 springform (pan)
• 3/8 cream (into)
• 3/8 cream chocolate mixture (into)
• 800 ml whipping cream (chilled)
• 300 gr chocolate (white)
• 325 ml cream in bowl until peaks form
• 170 gr chocolate wafer crumbs
• 180 ml cream to in saucepan (boil heavy)
• 150 gr sugar