Triple-chocolate Biscotti

• 5 eggs
• 400 gr sugar
• 375 gr chocolate (white)
• 250 gr hazelnuts
• 110 gr chocolate chips
• 85 gr dutch-processed cocoa powder
• 85 gr unbleached all-purpose flour
• 22 gr dark-roast coffee beans
• 7 gr baking soda
• 7 gr vanilla extract