- 1/2 cup hazelnuts
- 2 tablespoons butter, softened
- 1 cup butter
- 3 egg yolks
- 1 pinch salt
- 1 pinch white pepper
- 1 tablespoon fresh lemon juice
- Preheat the oven to 400 degrees F (200 degrees C). Place the hazelnuts on a baking sheet and toast in the oven for about 8 minutes, or until fragrant. Remove from the oven and cool. When cool enough to handle, place the nuts on a kitchen towel, fold the towel over to cover them and rub to remove the skins.
- Place the cooled hazelnuts into a food processor or blender and grind to a fine powder. Add 2 tablespoons of butter to the nuts and blend thoroughly. Set the hazelnut butter aside.
- Melt 1 cup of butter in a small saucepan, and keep hot. In the container of a blender, combine the egg yolks, salt, pepper and lemon juice. Cover, leaving the hole in the lid open, and blend for about 5 seconds. Continue to blend at high speed while pouring butter in through the lid in a thin stream. Stir in the hazelnut butter while still warm. Keep warm until serving or serve immediately.