Lightly roast ground hazelnuts. Leave to cool
Heat the cream. Break the chocolate into pieces and melt them while stirring. Fold in roasted nuts. Leave to cool, chill for 2 hours
Mix the truffle mixture until creamy with the hand mixer. Pour into a piping bag with perforated spout. Pour cream into the hollow spheres. Cool for about 1 hour
Roast the chopped nuts. Chop the chocolate coating separately. With one half coconut oil in a hot water bath
Dip half of the balls in white, the other half in dark chocolate. Let the balls drip off a little, then immediately turn them in the nuts. Place in the cuffs. Chill for 1 hour. Store in a cool place