Chocolate Scotch Truffles

• 30 shelled hazelnuts (whole)
• 2 egg yolks
• 1 in diameter
• 1/2 stick
• 750 gr good-quality unsweetened
• 400 ml chocolate in a saucepan over low (heavy)
• 280 ml chocolate in a saucepan (heavy)
• 200 gr confectioners sugar
• 100 gr confectioners sugar in
• 100 gr sugar in