Chocolate Hazelnut Biscotti

http://query.nytimes.com/gst/fullpage.html?res=9F0CE2DF1038F931A25751C1A965958260&scp=374&sq=cookie+recipes&st=nyt
http://smittenkitchen.com/2008/07/chocolate-hazelnut-biscotti/

Yield: About 60 biscotti.
Total time: 1 hour

• 1 cup whole hazelnuts, preferably blanched [237ml]
• 2 1/2 cups flour, plus flour for work surface [238g - 275g]
• 1/2 cup Dutch-style cocoa powder [115g]
• 1 tablespoon espresso powder
• Pinch of salt
• 1/2 teaspoon baking soda
• 3/4 teaspoon baking powder
• 4 large eggs
• 1 1/3 cups sugar [300g]