Maple Syrup Mousse

• 4 egg whites
• 2 egg yolks
• 1 at a time
• 3/8 mixture to lighten
• 700 ml whipping cream
• 400 gr pure maple syrup
• 240 gr gingersnap crumbs (crushed)
• 80 ml water
• 75 gr packed brown sugar (light)
• 50 gr sugar